Some standard content:
ICS 07. 060;67. 260
Marine Industry Standard of the People's Republic of China
HY/T065—2002
Microporous membrane of polyvinylidene fluoride
Microporous membrane of polyvinylidene fluoride2002-12-30 Issued
Issued by the State Oceanic Administration
Standard of the Mavericks
2003-02-01 Implementation
HY/T065—2002
Appendix A of this standard is a reminder appendix.
This standard is proposed by the China Membrane Industry Association. This standard is under the jurisdiction of the National Marine Standards and Metrology Center. Foreword
This standard was drafted by Shanghai Yiming Filtration Technology Co., Ltd., Liming Membrane Material Factory of Beijing University of Chemical Technology, and Shandong Zhaoyuan Membrane Group Co., Ltd.
The main drafters of this standard are Gong Zhihong, Liang Caixia and Zheng Liguo. 1
1 Scope
Marine Industry Standard of the People's Republic of China
Microporous membrane of polyvinylidene fluoride
Microporous membrane of polyvinylidene fluorideHY/T065—2002
This standard specifies the model compilation, technical requirements, test methods, inspection rules, packaging, transportation and storage of polyvinylidene fluoride microporous membrane. This standard applies to polyvinylidene fluoride microporous membrane for gas purification (hereinafter referred to as PVDF membrane). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB191—2000 Packaging, storage and transportation pictorial signs
GB9969.1—1998 General rules for instructions for use of industrial products GB/T13384—1992 General technical conditions for packaging of electromechanical products GB50073—2001 Clean room design specification GBJ73-1984 Clean room design specification
3 Definitions
This standard adopts the following definitions:
3.1 Gas
The gas referred to in this standard is filtered compressed air. 3.2 PVDF membranesPVDFmembranes
Refers to PVDF microporous membranes with unique orifice plate structures. 3.3 Air flux
The total volume of air passing through a unit area of a PVDF filter membrane in a unit time under specified test conditions. 3.4 Filtration precisionFiltration precisionThe diameter of the smallest particle that can be blocked by a PVDF filter membrane under specified test conditions. 3.5 Rejection
Under specified test conditions, the percentage of the number of particles downstream of the membrane to the number of particles upstream of the membrane within the test range of the PVDF filter membrane. 3.6 Porosity
The percentage of the volume occupied by the micropores in the filter membrane to the total volume of the membrane. 4 Classification and model
4.1 Classification
PVDF filter membranes are divided into two types according to the filtration accuracy: 0.1um and 0.3um. 4.2 Model
PVDF filter membrane model compilation consists of product code and filtration accuracy code. As follows: Approved by the State Oceanic Administration on December 30, 2002
Implemented on February 1, 2003
4.2.1 Product code
HY/T 065—2002
Filter accuracy code
Product code
Product code should be represented by the English abbreviation of polyvinylidene fluoride microporous membrane, that is, PVDF. 4.2.2 Filter accuracy code
Filter accuracy code should be represented by Arabic numerals, see Table 1. Table 1 Filter accuracy code
Filter accuracy/μm
4.2.3 Product model example
For example: PVDF-001
refers to polyvinylidene fluoride microporous membrane products with a filtration accuracy of 0.01um. 5 Requirements
5.1 Basic performance requirements
Basic performance requirements are shown in Table 2.
Table 2 Basic performance requirements of filter membrane
PVDF-001
PVDF-030
Filtration accuracy/μm
Air flux/
(L/(min ·cm\))
Posity/%
Retention rate/%
≥99.999 9
≥99. 999 9
Note: Air flux refers to the total volume of air passing through the membrane per minute per square centimeter at room temperature of 25℃, pressure difference of 0.01MPa, and inlet pressure of 0.1MPa.
5.2 Structural characteristics of filter membrane
5.2.1 The surface of the filter membrane is densely covered with a large number of micropores, and the structure that can play a filtering role is a perforated plate structure. 5.2.2 The filter membrane should have a certain mechanical strength and be able to fold. 5.3 Appearance requirements
The filter membrane should be flat, especially creases, without defects (pinholes), and without impurities visible to the naked eye. 5.4 Production environment requirements
The production and manufacturing environment of the filter membrane should ensure that the production process is not polluted, and the cleanliness level should be no less than 10,000 grades, in accordance with the standard GBJ73. 6 Test methods
6.1 Appearance inspection
Use the light inspection method, which should comply with the provisions of 5.3,
6.2 Determination of filtration accuracy and retention rate of 0.01um PVDF filter membrane The filtration accuracy and retention rate of 0.01um are determined by the aerosol challenge integrity test method. 6.2.1 Test Principle
The aerosol challenge integrity test method is to use a scattering photometer to detect the number and size of aerosols passing through the filter membrane under specified conditions, 2
HY/T 065-2002
Calculate the permeability by formula (1), and then convert it into the retention rate. (Note: Permeability plus retention rate equals 1)
P=Navoid/Ntotal×100%
Where: P permeability;
Navoid refers to the number of aerosols passing through the filter membrane; Ntotal refers to the total number of aerosols entering the filter membrane. 6.2.2 Test Apparatus
The test apparatus is an aerosol challenge instrument.
Instrument requirements:
1) Aerosol quantity: 1×102 particles/min. 2) Aerosol size: 0.01μm~1.3μm. 6.2.3 Test steps
6.2.3.1 Dry the membrane tester. 6.2.3.2 Dry the transmission connection pipeline. 6.2.3.3 The membrane tester should not be directly connected to the test instrument. 6.2.3.4 Install the filter into the test system. 6.2.3.5 Connect the air source and adjust the pressure to the specified test pressure range. 6.2.3.6 Connect the power supply of the aerosol challenger. Check the liquid level of the aerosol challenger.
6.2.3.8 Adjust the full-scale switch to full scale. 6.2.3.9 Adjust the zero point and set the test time. 6.2.3.10
Perform the challenge test.
6.2.3.11 Print the calculation results.
2 Convert the retention rate according to the permeability.
6.3 Determination of 0.30uμm PVDF filter accuracy and retention rate The 0.30μm filtration accuracy and retention rate are determined using a laser dust particle counter. 6.3.1 Test principle
(1)
Based on the principle of light scattering of dust, that is, dust particles in the air can scatter a light flux that is proportional to their particle size under a certain intensity of light, the filtration accuracy and retention rate of the PVDF filter membrane are calculated. 6.3.2 Test requirements
6.3.2.1 During the test, the working position and sampling port of the instrument should be at the same air pressure and temperature. 6.3.2.2 The dust concentration of the measured air should be less than 35,000 particles/1. 6.3.3 Test device
The test device is a laser dust particle counter. 6.3.4 Test steps
6.3.4.1 Turn on the power and preheat the instrument for 30 minutes. 6.3.4.2 Press the measurement key, the instrument starts self-cleaning. When the instrument counts to 0 at the 0.3um level, it means that the instrument has completed self-cleaning. 6.3.4.3 During routine testing, move the sampling tube from the "self-cleaning port" to the point to be tested, rotate the "flow adjustment" knob to adjust the flow to the scale line, and the instrument starts sampling testing. At the end of the test, the instrument automatically displays the number of various dust particles in each level from 0.3μm to 10um. 6.3.4.4 When monitoring a single particle size, press the function key to light up the light at the required function (such as 0.3um), and the instrument starts testing. 6.3.4.5 Press the print key, and the printer automatically prints the test results of the cycle. 6.3.4.6 Determine the filtration accuracy and retention rate based on the printed results. 6.4 Determination of air flux
The air flux is measured by a flux test device. 3
6.4.1 Test principle
HY/T 065-—2002
When measuring the air flux of a PVDF filter membrane, the gas passes through the filter membrane at a set temperature and pressure difference, and the total volume passing through the filter membrane per unit time and per unit area is measured.
6.4.2 Test requirements
6.4.2.1 The test is required to be carried out in a dry and clean room. 6.4.2.2 During the test, the test medium temperature should be 25°C, and the particle size should be less than or equal to 0.01μm. 6.4.3 Test device
The test device is shown in Figure A1 of Appendix A (Suggested Appendix). 6.4.4 Test procedure
6.4.4.1 Sampling Three samples are taken for each measurement. The samples are round and have a diameter of 57mm. 6.4.4.2 Test steps:
a) Place the sample in the tester.
b) Increase the pressure to the set pressure, and read the air flux of the sample from the flow meter after it stabilizes. 6.5 Determination of porosity
Use a mercury intrusion pressure instrument to determine the porosity.
6.5.1 Test principle
The porosity is determined by the mercury intrusion pressure method. Porosity is calculated according to formula (2): =Vtotal/[Vtotal+W/o]....
Porosity, %;
W——sample weight, in g;
True density of the sample, in g/cm\. 6.5.2 Test requirements
6.5.2.1 Carry out the test in a dry and clean room. 6.5.2.2 Sample preparation and mercury filling must be performed in a fume hood. 6.5.2.31
The mercury reagent used in the test is of analytical grade. (2)
The waste mercury used in the test should be placed in a special bottle, sealed, and placed in a fume hood. After a certain amount is accumulated, it should be sent to the waste mercury recycling site. 6.5.2.5 If mercury is spilled during the test, sulfur powder should be sprayed on the wine in time, and then the mercury should be absorbed into the special bottle. After a certain amount is accumulated, it should be sent to the waste mercury recycling site.
6.5.3 Test device
The mercury pressure instrument consists of a low-pressure system, a high-pressure system, a dilatometer, etc. The device is shown in Figure A2 of Appendix A (Suggested Appendix). 6.5.4 Test steps
6.5.4.1 Weighing the sample The sample is weighed with a precision balance with an accuracy of 0.0001g. The sample size is based on the volume of the sample. 6.5.4.2 Sample loading Place the weighed sample into the dilatometer, seal the interface between the capillary and the dilatometer, and then place it on the mercury filling device. 6.5.4.3 Vacuuming and filling with mercury When the vacuum reaches 102MPa~10-3MPa, slowly fill the mercury into the dilatometer. 6.5.4.4 Data processing After the test is completed, the microcomputer system will calculate and process the series of pressures and the amount of mercury filled measured in the experiment according to the compiled program to obtain the test results of porosity. 7 Inspection rules
Inspection rules are divided into factory inspection and type inspection. Each batch of filter membranes must be inspected and qualified by the quality inspection department of the manufacturer and accompanied by a certificate of conformity before they can be shipped.
7.1 Factory inspection
Each batch of filter membranes must undergo factory inspection. Only after passing the inspection can they be shipped. The factory inspection items and inspection methods are specified in Table 3. 4
Batching rules
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Porosity
The filter membrane produced by each batch is a batch.
7.1.2 Judgment rules
HY/T065—2002
Table 3 Factory inspection
Required chapter number
Test method chapter number
6.2 and 6.3
6.2 and 6.3
Inspection method
When the performance indicators of each batch of filter membrane inspection items are qualified, it is judged to have passed the factory inspection. If any indicator is unqualified, it is judged to be unqualified.
7.2 Type inspection
7.2.1 Inspection contents
Type inspection shall be conducted in any of the following cases: after formal production, when there are major changes in structure, materials, and processes that may affect product performance; during formal production, at least once a year; when transferring to another factory or resuming production after a six-month shutdown;
When specified in the contract;
When required by the national quality supervision and inspection department. 7.2.2 Inspection items
Type inspection items shall be as specified in Table 4.
Type inspection
7.2.3 Sampling method
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Porosity
Required article number
Article number of test method
6.2 and 6.3
6.2 and 6.3
Inspection method
Each batch of products is 300mm wide and 150m long. Take 3 samples at the head and tail respectively. The sampling method is: when production is stable, take 2 samples 2m below the upper end and 2m above the lower end, 30mm from the left and right edges, and take the third one between the upper end and the lower end.
7.2.4 Judgment rules
When any performance index of the sampled filter membrane fails to meet the requirements, it is judged as unqualified. If the test fails, take 3 more samples at an interval of 5.4m from the lower end to test its performance. If the performance index is met, it is judged to have passed the type inspection. 8 Marking and instruction manual
8.1 Product marking
8.1.1 According to the relevant provisions of GB191, each batch of membranes should be marked. The marking should be on the front of both ends of the membrane, with clear and distinct handwriting and not easy to be erased.
8.1.2 The marking content is as follows:
-Model, name and trademark;
HY/T 065—2002
Main parameters: specification, air flux, filtration accuracy; production date and batch number;
Name and address of the manufacturer.
8.2 Instructions for Use
Each batch of filter membranes shall have an instruction manual, which shall be implemented in accordance with standard GB9969.1. The contents are as follows: product model, product name;
Product standard number, product standard name: Overview;
Main technical parameters;
Methods for using and maintaining the filter membrane.
Packaging, transportation and storage
9.1 Packaging
9.1.1 According to the relevant provisions of GB/T13384, the filter membrane shall be sealed in a clean plastic bag and then placed in a packaging box. 9.1.2 The packaging box shall be accompanied by the following documents: product certificate;
Instructions for Use.
9.2 Transportation
9.2.1 The filter membrane shall not be transported together with toxic, corrosive, volatile or odorous items. 9.2.2 It shall be handled with care during transportation and it is strictly forbidden to drop or hit it. 9.2.3 The membrane should not be exposed to rain, moisture or sunlight during transportation. 9.3 Storage
9.3.1 The membrane should be stored in a cool, dry and ventilated warehouse. It is strictly prohibited to stack it in the open air, expose it to the sun, rain or near heat sources. 9.3.2 The membrane should not be stored in the same warehouse with toxic, corrosive, volatile or odorous items. 9.3.3 The membrane should be placed on a wooden pallet, and the distance from the ground and wall should be not less than 10 cm. The number of stacking layers should not exceed the stacking layer limit indicated on the box.
The device used in the test is shown in Figures A1 to A2.3
HY/T 065—2002
Appendix A
(Suggested Appendix)
Device Schematic Diagram
1, 2-pressure gauge; 3, 4-flow meter; 5, 6, 8, 9-regulating valve; 7-tester Figure A1
Air flux tester
Key points
1-pulse reset switch; 2-zero adjustment switch: 3-full scale switch; 4-reducer; 5-locking screw; 6-fine adjustment; 7-contact rod; 8-overflow cap; 9-electric connector; 10-high pressure container; 11-high pressure valve: 12-high pressure gauge; 13-pulse counter; 14-timing switch; 15-power switch; 16-pump switch; 17-pump stop switch; 18-motor switch; 19-oil drain switch; 20-exhaust switch; 21-recorder switch Figure A2 Mercury pressure meter2 During the test, the test medium temperature should be 25℃, and the particle size should be less than or equal to 0.01μm gas. 6.4.3 Test apparatus
The test apparatus is shown in Figure A1 of Appendix A (Suggested Appendix). 6.4.4 Test procedure
6.4.4.1 Sampling Three samples are taken for each measurement. The samples are round and have a diameter of 57mm. 6.4.4.2 Test steps:
a) Place the sample in the tester.
b) Increase the pressure to the set pressure, and read the air flux of the sample from the flowmeter after it stabilizes. 6.5 Determination of porosity
The porosity is determined by a mercury intrusion meter.
6.5.1 Test principle
The porosity is determined by the mercury intrusion method. The porosity is calculated according to formula (2): =Vtotal/[Vtotal+W/o]....
Porosity, %;
Wherein:—
Vtotal——total volume of the membrane, m;
W——sample volume, in g;
True density of the sample, in g/cm\. 6.5.2 Test requirements
6.5.2.1 The test shall be carried out in a dry and clean room. 6.5.2.2 Sample preparation and mercury filling shall be carried out in a fume hood. 6.5.2.31
The mercury reagent used in the test shall be of analytical grade. (2)
Waste mercury used in the test shall be placed in a special bottle, sealed and placed in a fume hood. After a certain amount is accumulated, it shall be sent to the waste mercury recycling site. 6.5.2.5 If mercury is spilled during the test, sulfur powder should be used to spray alcohol in time, and then the mercury should be absorbed into a special bottle. After a certain amount is accumulated, it should be sent to the waste mercury recycling site.
6.5.3 Test device
The mercury pressure instrument consists of a low-pressure system, a high-pressure system, a dilatometer, etc. The device is shown in Figure A2 of Appendix A (Suggested Appendix). 6.5.4 Test steps
6.5.4.1 Weighing the sample The sample is weighed with a precision balance with an accuracy of 0.0001g. The sample size is taken according to the volume of the sample. 6.5.4.2 Sample loading Place the weighed sample into the dilatometer, seal the interface between the capillary and the dilatometer, and then place it on the mercury filling device. 6.5.4.3 Vacuuming and filling with mercury When the vacuum reaches 102MPa~10-3MPa, slowly fill the mercury into the dilatometer. 6.5.4.4 After the data processing test is completed, the microcomputer system will calculate and process the series of pressures and mercury injection amounts measured in the experiment according to the prepared program to obtain the test results of porosity. 7 Inspection rules
Inspection rules are divided into factory inspection and type inspection. Each batch of filter membranes must be inspected and qualified by the quality inspection department of the manufacturer and accompanied by a certificate of conformity before they can be shipped out.
7.1 Factory inspection
Each batch of filter membranes must undergo factory inspection. Only after passing the inspection can they be shipped out. The factory inspection items and inspection methods are specified in Table 3. 4
Batching rules
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Porosity
The filter membrane produced by each batch is a batch.
7.1.2 Judgment rules
HY/T065—2002
Table 3 Factory inspection
Requirement chapter number
Test method chapter number
6.2 and 6.3
6.2 and 6.3
Inspection method
When the performance indicators of each batch of filter membrane inspection items are qualified, it is judged to have passed the factory inspection. If any indicator is unqualified, it is judged to be unqualified.
7.2 Type inspection
7.2.1 Inspection contents
Type inspection shall be conducted in any of the following cases: after formal production, when there are major changes in structure, materials, and processes that may affect product performance; during formal production, at least once a year; when transferring to another factory or resuming production after a six-month shutdown;
When specified in the contract;
When required by the national quality supervision and inspection department. 7.2.2 Inspection items
Type inspection items shall be as specified in Table 4.
Type inspection
7.2.3 Sampling method
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention ratewww.bzxz.net
Porosity
Required article number
Article number of test method
6.2 and 6.3
6.2 and 6.3
Inspection method
Each batch of products is 300mm wide and 150m long. Take 3 samples at the head and tail respectively. The sampling method is: when production is stable, take 2 samples 2m below the upper end and 2m above the lower end, 30mm from the left and right edges, and take the third one between the upper end and the lower end.
7.2.4 Judgment rules
When any performance index of the sampled filter membrane fails to meet the requirements, it is judged as unqualified. If the test fails, take 3 more samples at an interval of 5.4m from the lower end to test its performance. If the performance index is met, it is judged to have passed the type inspection. 8 Marking and instruction manual
8.1 Product marking
8.1.1 According to the relevant provisions of GB191, each batch of membranes should be marked. The marking should be on the front of both ends of the membrane, with clear and distinct handwriting and not easy to be erased.
8.1.2 The marking content is as follows:
-Model, name and trademark;
HY/T 065—2002
Main parameters: specification, air flux, filtration accuracy; production date and batch number;
Name and address of the manufacturer.
8.2 Instructions for Use
Each batch of filter membranes shall have an instruction manual, which shall be implemented in accordance with standard GB9969.1. The contents are as follows: product model, product name;
Product standard number, product standard name: Overview;
Main technical parameters;
Methods for using and maintaining the filter membrane.
Packaging, transportation and storage
9.1 Packaging
9.1.1 According to the relevant provisions of GB/T13384, the filter membrane shall be sealed in a clean plastic bag and then placed in a packaging box. 9.1.2 The packaging box shall be accompanied by the following documents: product certificate;
Instructions for Use.
9.2 Transportation
9.2.1 The filter membrane shall not be transported together with toxic, corrosive, volatile or odorous items. 9.2.2 It shall be handled with care during transportation and it is strictly forbidden to drop or hit it. 9.2.3 The membrane should not be exposed to rain, moisture or sunlight during transportation. 9.3 Storage
9.3.1 The membrane should be stored in a cool, dry and ventilated warehouse. It is strictly prohibited to stack it in the open air, expose it to the sun, rain or near heat sources. 9.3.2 The membrane should not be stored in the same warehouse with toxic, corrosive, volatile or odorous items. 9.3.3 The membrane should be placed on a wooden pallet, and the distance from the ground and wall should be not less than 10 cm. The number of stacking layers should not exceed the stacking layer limit indicated on the box.
The device used in the test is shown in Figures A1 to A2.3
HY/T 065—2002
Appendix A
(Suggested Appendix)
Device Schematic Diagram
1, 2-pressure gauge; 3, 4-flow meter; 5, 6, 8, 9-regulating valve; 7-tester Figure A1
Air flux tester
Key points
1-pulse reset switch; 2-zero adjustment switch: 3-full scale switch; 4-reducer; 5-locking screw; 6-fine adjustment; 7-contact rod; 8-overflow cap; 9-electric connector; 10-high pressure container; 11-high pressure valve: 12-high pressure gauge; 13-pulse counter; 14-timing switch; 15-power switch; 16-pump switch; 17-pump stop switch; 18-motor switch; 19-oil drain switch; 20-exhaust switch; 21-recorder switch Figure A2 Mercury pressure meter2 During the test, the test medium temperature should be 25℃, and the particle size should be less than or equal to 0.01μm gas. 6.4.3 Test apparatus
The test apparatus is shown in Figure A1 of Appendix A (Suggested Appendix). 6.4.4 Test procedure
6.4.4.1 Sampling Three samples are taken for each measurement. The samples are round and have a diameter of 57mm. 6.4.4.2 Test steps:
a) Place the sample in the tester.
b) Increase the pressure to the set pressure, and read the air flux of the sample from the flowmeter after it stabilizes. 6.5 Determination of porosity
The porosity is determined by a mercury intrusion meter.
6.5.1 Test principle
The porosity is determined by the mercury intrusion method. The porosity is calculated according to formula (2): =Vtotal/[Vtotal+W/o]....
Porosity, %;
Wherein:—
Vtotal——total volume of the membrane, m;
W——sample volume, in g;
True density of the sample, in g/cm\. 6.5.2 Test requirements
6.5.2.1 The test shall be carried out in a dry and clean room. 6.5.2.2 Sample preparation and mercury filling shall be carried out in a fume hood. 6.5.2.31
The mercury reagent used in the test shall be of analytical grade. (2)
Waste mercury used in the test shall be placed in a special bottle, sealed and placed in a fume hood. After a certain amount is accumulated, it shall be sent to the waste mercury recycling site. 6.5.2.5 If mercury is spilled during the test, sulfur powder should be used to spray alcohol in time, and then the mercury should be absorbed into a special bottle. After a certain amount is accumulated, it should be sent to the waste mercury recycling site.
6.5.3 Test device
The mercury pressure instrument consists of a low-pressure system, a high-pressure system, a dilatometer, etc. The device is shown in Figure A2 of Appendix A (Suggested Appendix). 6.5.4 Test steps
6.5.4.1 Weighing the sample The sample is weighed with a precision balance with an accuracy of 0.0001g. The sample size is taken according to the volume of the sample. 6.5.4.2 Sample loading Place the weighed sample into the dilatometer, seal the interface between the capillary and the dilatometer, and then place it on the mercury filling device. 6.5.4.3 Vacuuming and filling with mercury When the vacuum reaches 102MPa~10-3MPa, slowly fill the mercury into the dilatometer. 6.5.4.4 After the data processing test is completed, the microcomputer system will calculate and process the series of pressures and mercury injection amounts measured in the experiment according to the prepared program to obtain the test results of porosity. 7 Inspection rules
Inspection rules are divided into factory inspection and type inspection. Each batch of filter membranes must be inspected and qualified by the quality inspection department of the manufacturer and accompanied by a certificate of conformity before they can be shipped out.
7.1 Factory inspection
Each batch of filter membranes must undergo factory inspection. Only after passing the inspection can they be shipped out. The factory inspection items and inspection methods are specified in Table 3. 4
Batching rules
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Porosity
The filter membrane produced by each batch is a batch.
7.1.2 Judgment rules
HY/T065—2002
Table 3 Factory inspection
Requirement chapter number
Test method chapter number
6.2 and 6.3
6.2 and 6.3
Inspection method
When the performance indicators of each batch of filter membrane inspection items are qualified, it is judged to have passed the factory inspection. If any indicator is unqualified, it is judged to be unqualified.
7.2 Type inspection
7.2.1 Inspection contents
Type inspection shall be conducted in any of the following cases: after formal production, when there are major changes in structure, materials, and processes that may affect product performance; during formal production, at least once a year; when transferring to another factory or resuming production after a six-month shutdown;
When specified in the contract;
When required by the national quality supervision and inspection department. 7.2.2 Inspection items
Type inspection items shall be as specified in Table 4.
Type inspection
7.2.3 Sampling method
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Porosity
Required article number
Article number of test method
6.2 and 6.3
6.2 and 6.3
Inspection method
Each batch of products is 300mm wide and 150m long. Take 3 samples at the head and tail respectively. The sampling method is: when production is stable, take 2 samples 2m below the upper end and 2m above the lower end, 30mm from the left and right edges, and take the third one between the upper end and the lower end.
7.2.4 Judgment rules
When any performance index of the sampled filter membrane fails to meet the requirements, it is judged as unqualified. If the test fails, take 3 more samples at an interval of 5.4m from the lower end to test its performance. If the performance index is met, it is judged to have passed the type inspection. 8 Marking and instruction manual
8.1 Product marking
8.1.1 According to the relevant provisions of GB191, each batch of membranes should be marked. The marking should be on the front of both ends of the membrane, with clear and distinct handwriting and not easy to be erased.
8.1.2 The marking content is as follows:
-Model, name and trademark;
HY/T 065—2002
Main parameters: specification, air flux, filtration accuracy; production date and batch number;
Name and address of the manufacturer.
8.2 Instructions for Use
Each batch of filter membranes shall have an instruction manual, which shall be implemented in accordance with standard GB9969.1. The contents are as follows: product model, product name;
Product standard number, product standard name: Overview;
Main technical parameters;
Methods for using and maintaining the filter membrane.
Packaging, transportation and storage
9.1 Packaging
9.1.1 According to the relevant provisions of GB/T13384, the filter membrane shall be sealed in a clean plastic bag and then placed in a packaging box. 9.1.2 The packaging box shall be accompanied by the following documents: product certificate;
Instructions for Use.
9.2 Transportation
9.2.1 The filter membrane shall not be transported together with toxic, corrosive, volatile or odorous items. 9.2.2 It shall be handled with care during transportation and it is strictly forbidden to drop or hit it. 9.2.3 The membrane should not be exposed to rain, moisture or sunlight during transportation. 9.3 Storage
9.3.1 The membrane should be stored in a cool, dry and ventilated warehouse. It is strictly prohibited to stack it in the open air, expose it to the sun, rain or near heat sources. 9.3.2 The membrane should not be stored in the same warehouse with toxic, corrosive, volatile or odorous items. 9.3.3 The membrane should be placed on a wooden pallet, and the distance from the ground and wall should be not less than 10 cm. The number of stacking layers should not exceed the stacking layer limit indicated on the box.
The device used in the test is shown in Figures A1 to A2.3
HY/T 065—2002
Appendix A
(Suggested Appendix)
Device Schematic Diagram
1, 2-pressure gauge; 3, 4-flow meter; 5, 6, 8, 9-regulating valve; 7-tester Figure A1
Air flux tester
Key points
1-pulse reset switch; 2-zero adjustment switch: 3-full scale switch; 4-reducer; 5-locking screw; 6-fine adjustment; 7-contact rod; 8-overflow cap; 9-electric connector; 10-high pressure container; 11-high pressure valve: 12-high pressure gauge; 13-pulse counter; 14-timing switch; 15-power switch; 16-pump switch; 17-pump stop switch; 18-motor switch; 19-oil drain switch; 20-exhaust switch; 21-recorder switch Figure A2 Mercury pressure meter2 Test requirements
6.5.2.1 The test shall be conducted in a dry and clean room. 6.5.2.2 Sample preparation and mercury filling shall be conducted in a fume hood. 6.5.2.31
The mercury reagent used in the test shall be of analytical grade. (2)
The waste mercury used in the test shall be placed in a special bottle, sealed, and placed in a fume hood. After a certain amount is accumulated, it shall be sent to a waste mercury recycling site. 6.5.2.5 If mercury is spilled during the test, sulfur powder shall be sprayed on the alcohol in time, and the mercury shall be absorbed into a special bottle. After a certain amount is accumulated, it shall be sent to a waste mercury recycling site.
6.5.3 Test device
The mercury pressure instrument consists of a low-pressure system, a high-pressure system, a dilatometer, etc. The device is shown in Figure A2 of Appendix A (Suggested Appendix). 6.5.4 Test steps
6.5.4.1 Weighing the sample The sample is weighed with a precision balance with an accuracy of 0.0001g. The sample size is taken according to the volume of the sample. 6.5.4.2 Loading the sample Place the weighed sample into the dilatometer, seal the interface between the capillary and the dilatometer, and then place it on the mercury filling device. 6.5.4.3 Vacuuming and filling with mercury When the vacuum reaches 102MPa~10-3MPa, slowly fill the mercury into the dilatometer. 6.5.4.4 Data processing After the test is completed, the microcomputer system will calculate and process the series of pressures measured in the experiment and the amount of mercury filled according to the compiled program to obtain the test results of porosity. 7 Inspection rules
Inspection rules are divided into factory inspection and type inspection. Each batch of filter membranes must be inspected and qualified by the quality inspection department of the manufacturer and attached with a certificate before they can be shipped.
7.1 Factory Inspection
Each batch of filter membranes must undergo factory inspection. Only after passing the inspection can they be shipped out of the factory. The factory inspection items and inspection methods are specified in Table 3. 4
Batching rules
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Pore ratio
The filter membrane produced by each batch is a batch.
7.1.2 Judgment rules
HY/T065—2002
Table 3 Factory inspection
Requirement chapter number
Test method chapter number
6.2 and 6.3
6.2 and 6.3
Inspection method
When the performance indicators of each batch of filter membrane inspection items are qualified, it is judged to have passed the factory inspection. If any indicator is unqualified, it is judged to be unqualified.
7.2 Type inspection
7.2.1 Inspection contents
Type inspection shall be conducted in any of the following cases: after formal production, when there are major changes in structure, materials, and processes that may affect product performance; during formal production, at least once a year; when transferring to another factory or resuming production after a six-month shutdown;
When specified in the contract;
When required by the national quality supervision and inspection department. 7.2.2 Inspection items
Type inspection items shall be as specified in Table 4.
Type inspection
7.2.3 Sampling method
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Porosity
Required article number
Article number of test method
6.2 and 6.3
6.2 and 6.3
Inspection method
Each batch of products is 300mm wide and 150m long. Take 3 samples at the head and tail respectively. The sampling method is: when production is stable, take 2 samples 2m below the upper end and 2m above the lower end, 30mm from the left and right edges, and take the third one between the upper end and the lower end.
7.2.4 Judgment rules
When any performance index of the sampled filter membrane fails to meet the requirements, it is judged as unqualified. If the test fails, take 3 more samples at an interval of 5.4m from the lower end to test its performance. If the performance index is met, it is judged to have passed the type inspection. 8 Marking and instruction manual
8.1 Product marking
8.1.1 According to the relevant provisions of GB191, each batch of membranes should be marked. The marking should be on the front of both ends of the membrane, with clear and distinct handwriting and not easy to be erased.
8.1.2 The marking content is as follows:
-Model, name and trademark;
HY/T 065—2002
Main parameters: specification, air flux, filtration accuracy; production date and batch number;
Name and address of the manufacturer.
8.2 Instructions for Use
Each batch of filter membranes shall have an instruction manual, which shall be implemented in accordance with standard GB9969.1. The contents are as follows: product model, product name;
Product standard number, product standard name: Overview;
Main technical parameters;
Methods for using and maintaining the filter membrane.
Packaging, transportation and storage
9.1 Packaging
9.1.1 According to the relevant provisions of GB/T13384, the filter membrane shall be sealed in a clean plastic bag and then placed in a packaging box. 9.1.2 The packaging box shall be accompanied by the following documents: product certificate;
Instructions for Use.
9.2 Transportation
9.2.1 The filter membrane shall not be transported together with toxic, corrosive, volatile or odorous items. 9.2.2 It shall be handled with care during transportation and it is strictly forbidden to drop or hit it. 9.2.3 The membrane should not be exposed to rain, moisture or sunlight during transportation. 9.3 Storage
9.3.1 The membrane should be stored in a cool, dry and ventilated warehouse. It is strictly prohibited to stack it in the open air, expose it to the sun, rain or near heat sources. 9.3.2 The membrane should not be stored in the same warehouse with toxic, corrosive, volatile or odorous items. 9.3.3 The membrane should be placed on a wooden pallet, and the distance from the ground and wall should be not less than 10 cm. The number of stacking layers should not exceed the stacking layer limit indicated on the box.
The device used in the test is shown in Figures A1 to A2.3
HY/T 065—2002
Appendix A
(Suggested Appendix)
Device Schematic Diagram
1, 2-pressure gauge; 3, 4-flow meter; 5, 6, 8, 9-regulating valve; 7-tester Figure A1
Air flux tester
Key points
1-pulse reset switch; 2-zero adjustment switch: 3-full scale switch; 4-reducer; 5-locking screw; 6-fine adjustment; 7-contact rod; 8-overflow cap; 9-electric connector; 10-high pressure container; 11-high pressure valve: 12-high pressure gauge; 13-pulse counter; 14-timing switch; 15-power switch; 16-pump switch; 17-pump stop switch; 18-motor switch; 19-oil drain switch; 20-exhaust switch; 21-recorder switch Figure A2 Mercury pressure meter2 Test requirements
6.5.2.1 The test shall be conducted in a dry and clean room. 6.5.2.2 Sample preparation and mercury filling shall be conducted in a fume hood. 6.5.2.31
The mercury reagent used in the test shall be of analytical grade. (2)
The waste mercury used in the test shall be placed in a special bottle, sealed, and placed in a fume hood. After a certain amount is accumulated, it shall be sent to a waste mercury recycling site. 6.5.2.5 If mercury is spilled during the test, sulfur powder shall be sprayed on the alcohol in time, and the mercury shall be absorbed into a special bottle. After a certain amount is accumulated, it shall be sent to a waste mercury recycling site.
6.5.3 Test device
The mercury pressure instrument consists of a low-pressure system, a high-pressure system, a dilatometer, etc. The device is shown in Figure A2 of Appendix A (Suggested Appendix). 6.5.4 Test steps
6.5.4.1 Weighing the sample The sample is weighed with a precision balance with an accuracy of 0.0001g. The sample size is taken according to the volume of the sample. 6.5.4.2 Loading the sample Place the weighed sample into the dilatometer, seal the interface between the capillary and the dilatometer, and then place it on the mercury filling device. 6.5.4.3 Vacuuming and filling with mercury When the vacuum reaches 102MPa~10-3MPa, slowly fill the mercury into the dilatometer. 6.5.4.4 Data processing After the test is completed, the microcomputer system will calculate and process the series of pressures measured in the experiment and the amount of mercury filled according to the compiled program to obtain the test results of porosity. 7 Inspection rules
Inspection rules are divided into factory inspection and type inspection. Each batch of filter membranes must be inspected and qualified by the quality inspection department of the manufacturer and attached with a certificate before they can be shipped.
7.1 Factory Inspection
Each batch of filter membranes must undergo factory inspection. Only after passing the inspection can they be shipped out of the factory. The factory inspection items and inspection methods are specified in Table 3. 4
Batching rules
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Pore ratio
The filter membrane produced by each batch is a batch.
7.1.2 Judgment rules
HY/T065—2002
Table 3 Factory inspection
Requirement chapter number
Test method chapter number
6.2 and 6.3
6.2 and 6.3
Inspection method
When the performance indicators of each batch of filter membrane inspection items are qualified, it is judged to have passed the factory inspection. If any indicator is unqualified, it is judged to be unqualified.
7.2 Type inspection
7.2.1 Inspection contents
Type inspection shall be conducted in any of the following cases: after formal production, when there are major changes in structure, materials, and processes that may affect product performance; during formal production, at least once a year; when transferring to another factory or resuming production after a six-month shutdown;
When specified in the contract;
When required by the national quality supervision and inspection department. 7.2.2 Inspection items
Type inspection items shall be as specified in Table 4.
Type inspection
7.2.3 Sampling method
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Porosity
Required article number
Article number of test method
6.2 and 6.3
6.2 and 6.3
Inspection method
Each batch of products is 300mm wide and 150m long. Take 3 samples at the head and tail respectively. The sampling method is: when production is stable, take 2 samples 2m below the upper end and 2m above the lower end, 30mm from the left and right edges, and take the third one between the upper end and the lower end.
7.2.4 Judgment rules
When any performance index of the sampled filter membrane fails to meet the requirements, it is judged as unqualified. If the test fails, take 3 more samples at an interval of 5.4m from the lower end to test its performance. If the performance index is met, it is judged to have passed the type inspection. 8 Marking and instruction manual
8.1 Product marking
8.1.1 According to the relevant provisions of GB191, each batch of membranes should be marked. The marking should be on the front of both ends of the membrane, with clear and distinct handwriting and not easy to be erased.
8.1.2 The marking content is as follows:
-Model, name and trademark;
HY/T 065—2002
Main parameters: specification, air flux, filtration accuracy; production date and batch number;
Name and address of the manufacturer.
8.2 Instructions for Use
Each batch of filter membranes shall have an instruction manual, which shall be implemented in accordance with standard GB9969.1. The contents are as follows: product model, product name;
Product standard number, product standard name: Overview;
Main technical parameters;
Methods for using and maintaining the filter membrane.
Packaging, transportation and storage
9.1 Packaging
9.1.1 According to the relevant provisions of GB/T13384, the filter membrane shall be sealed in a clean plastic bag and then placed in a packaging box. 9.1.2 The packaging box shall be accompanied by the following documents: product certificate;
Instructions for Use.
9.2 Transportation
9.2.1 The filter membrane shall not be transported together with toxic, corrosive, volatile or odorous items. 9.2.2 It shall be handled with care during transportation and it is strictly forbidden to drop or hit it. 9.2.3 The membrane should not be exposed to rain, moisture or sunlight during transportation. 9.3 Storage
9.3.1 The membrane should be stored in a cool, dry and ventilated warehouse. It is strictly prohibited to stack it in the open air, expose it to the sun, rain or near heat sources. 9.3.2 The membrane should not be stored in the same warehouse with toxic, corrosive, volatile or odorous items. 9.3.3 The membrane should be placed on a wooden pallet, and the distance from the ground and wall should be not less than 10 cm. The number of stacking layers should not exceed the stacking layer limit indicated on the box.
The device used in the test is shown in Figure A1 to Figure A2.3
HY/T 065—2002
Appendix A
(Suggested Appendix)
Device Schematic Diagram
1, 2-pressure gauge; 3, 4-flow meter; 5, 6, 8, 9-regulating valve; 7-tester Figure A1
Air flux tester
Key points
1-pulse reset switch; 2-zero adjustment switch: 3-full scale switch; 4-reducer; 5-locking screw; 6-fine adjustment; 7-contact rod; 8-overflow cap; 9-electric connector; 10-high pressure container; 11-high pressure valve: 12-high pressure gauge; 13-pulse counter; 14-timing switch; 15-power switch; 16-pump switch; 17-pump stop switch; 18-motor switch; 19-oil drain switch; 20-exhaust switch; 21-recorder switch Figure A2 Mercury pressure meter2 Judgment rules
HY/T065—2002
Table 3 Factory inspection
Required chapter number
Test method chapter number
6.2 and 6.3
6.2 and 6.3
Inspection method
When the performance indicators of each batch of filter membrane inspection items are qualified, it is judged to have passed the factory inspection. If any indicator is unqualified, it is judged to be unqualified.
7.2 Type inspection
7.2.1 Inspection content
Type inspection should be carried out in one of the following situations: After formal production, if there are major changes in structure, materials, and processes that may affect product performance; During formal production, it should be carried out at least once a year; When transferring to another factory or resuming production after stopping production for half a year:
When stipulated in the contract;
When required by the national quality supervision and inspection department. 7.2.2 Inspection items
Type inspection items shall be in accordance with the provisions of Table 4.
Type inspection
7.2.3 Sampling method
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Porosity
Required article number
Article number of test method
6.2 and 6.3
6.2 and 6.3
Inspection method
Each batch of products is 300mm wide and 150m long. Take 3 samples at the head and tail respectively. The sampling method is: when production is stable, take 2 samples at 2m below the upper end and 2m above the lower end, 30mm from the left and right edges, and take the third one between the upper end and the lower end.
7.2.4 Judgment rules
When any performance index of the sampled filter membrane fails to meet the requirements, it is judged as unqualified. If the test fails, take 3 more samples at an interval of 5.4m from the lower end to test its performance. If the performance index is met, it is judged to have passed the type inspection. 8 Marking and instruction manual
8.1 Product marking
8.1.1 According to the relevant provisions of GB191, each batch of membranes should be marked. The marking should be on the front of both ends of the membrane, with clear and distinct handwriting and not easy to be erased.
8.1.2 The marking content is as follows:
-Model, name and trademark;
HY/T 065—2002
Main parameters: specification, air flux, filtration accuracy; production date and batch number;
Name and address of the manufacturer.
8.2 Instructions for Use
Each batch of filter membranes shall have an instruction manual, which shall be implemented in accordance with standard GB9969.1. The contents are as follows: product model, product name;
Product standard number, product standard name: Overview;
Main technical parameters;
Methods for using and maintaining the filter membrane.
Packaging, transportation and storage
9.1 Packaging
9.1.1 According to the relevant provisions of GB/T13384, the filter membrane shall be sealed in a clean plastic bag and then placed in a packaging box. 9.1.2 The packaging box shall be accompanied by the following documents: product certificate;
Instructions for Use.
9.2 Transportation
9.2.1 The filter membrane shall not be transported together with toxic, corrosive, volatile or odorous items. 9.2.2 It shall be handled with care during transportation and it is strictly forbidden to drop or hit it. 9.2.3 The membrane should not be exposed to rain, moisture or sunlight during transportation. 9.3 Storage
9.3.1 The membrane should be stored in a cool, dry and ventilated warehouse. It is strictly prohibited to stack it in the open air, expose it to the sun, rain or near heat sources. 9.3.2 The membrane should not be stored in the same warehouse with toxic, corrosive, volatile or odorous items. 9.3.3 The membrane should be placed on a wooden pallet, and the distance from the ground and wall should be not less than 10 cm. The number of stacking layers should not exceed the stacking layer limit indicated on the box.
The device used in the test is shown in Figures A1 to A2.3
HY/T 065—2002
Appendix A
(Suggested Appendix)
Device Schematic Diagram
1, 2-pressure gauge; 3, 4-flow meter; 5, 6, 8, 9-regulating valve; 7-tester Figure A1
Air flux tester
Key points
1-pulse reset switch; 2-zero adjustment switch: 3-full scale switch; 4-reducer; 5-locking screw; 6-fine adjustment; 7-contact rod; 8-overflow cap; 9-electric connector; 10-high pressure container; 11-high pressure valve: 12-high pressure gauge; 13-pulse counter; 14-timing switch; 15-power switch; 16-pump switch; 17-pump stop switch; 18-motor switch; 19-oil drain switch; 20-exhaust switch; 21-recorder switch Figure A2 Mercury pressure meter2 Judgment rules
HY/T065—2002
Table 3 Factory inspection
Required chapter number
Test method chapter number
6.2 and 6.3
6.2 and 6.3
Inspection method
When the performance indicators of each batch of filter membrane inspection items are qualified, it is judged to have passed the factory inspection. If any indicator is unqualified, it is judged to be unqualified.
7.2 Type inspection
7.2.1 Inspection content
Type inspection should be carried out in one of the following situations: After formal production, if there are major changes in structure, materials, and processes that may affect product performance; During formal production, it should be carried out at least once a year; When transferring to another factory or resuming production after stopping production for half a year:
When stipulated in the contract;
When required by the national quality supervision and inspection department. 7.2.2 Inspection items
Type inspection items shall be in accordance with the provisions of Table 4.
Type inspection
7.2.3 Sampling method
Inspection items
Appearance inspection
Filtration accuracy
Air flux
Retention rate
Porosity
Required article number
Article number of test method
6.2 and 6.3
6.2 and 6.3
Inspection method
Each batch of products is 300mm wide and 150m long. Take 3 samples at the head and tail respectively. The sampling method is: when production is stable, take 2 samples at 2m below the upper end and 2m above the lower end, 30mm from the left and right edges, and take the third one between the upper end and the lower end.
7.2.4 Judgment rules
When any performance index of the sampled filter membrane fails to meet the requirements, it is judged as unqualified. If the test fails, take 3 more samples at an interval of 5.4m from the lower end to test its performance. If the performance index is met, it is judged to have passed the type inspection. 8 Marking and instruction manual
8.1 Product marking
8.1.1 According to the relevant provisions of GB191, each batch of membranes should be marked. The marking should be on the front of both ends of the membrane, with clear and distinct handwriting and not easy to be erased.
8.1.2 The marking content is as follows:
-Model, name and trademark;
HY/T 065—2002
Main parameters: specification, air flux, filtration accuracy; production date and batch number;
Name and address of the manufacturer.
8.2 Instructions for Use
Each batch of filter membranes shall have an instruction manual, which shall be implemented in accordance with standard GB9969.1. The contents are as follows: product model, product name;
Product standard number, product standard name: Overview;
Main technical parameters;
Methods for using and maintaining the filter membrane.
Packaging, transportation and storage
9.1 Packaging
9.1.1 According to the relevant provisions of GB/T13384, the filter membrane shall be sealed in a clean plastic bag and then placed in a packaging box. 9.1.2 The packaging box shall be accompanied by the following documents: product certificate;
Instructions for Use.
9.2 Transportation
9.2.1 The filter membrane shall not be transported together with toxic, corrosive, volatile or odorous items. 9.2.2 It shall be handled with care during transportation and it is strictly forbidden to drop or hit it. 9.2.3 The membrane should not be exposed to rain, moisture or sunlight during transportation. 9.3 Storage
9.3.1 The membrane should be stored in a cool, dry and ventilated warehouse. It is strictly prohibited to stack it in the open air, expose it to the sun, rain or near heat sources. 9.3.2 The membrane should not be stored in the same warehouse with toxic, corrosive, volatile or odorous items. 9.3.3 The membrane should be placed on a wooden pallet, and the distance from the ground and wall should be not less than 10 cm. The number of stacking layers should not exceed the stacking layer limit indicated on the box.
The device used in the test is shown in Figures A1 to A2.3
HY/T 065—2002
Appendix A
(Suggested Appendix)
Device Schematic Diagram
1, 2-pressure gauge; 3, 4-flow meter; 5, 6, 8, 9-regulating valve; 7-tester Figure A1
Air flux tester
Key points
1-pulse reset switch; 2-zero adjustment switch: 3-full scale switch; 4-reducer; 5-locking screw; 6-fine adjustment; 7-contact rod; 8-overflow cap; 9-electric connector; 10-high pressure container; 11-high pressure valve: 12-high pressure gauge; 13-pulse counter; 14-timing switch; 15-power switch; 16-pump switch; 17-pump stop switch; 18-motor switch; 19-oil drain switch; 20-exhaust switch; 21-recorder switch Figure A2 Mercury pressure meter6, 8, 9-regulating valve; 7-tester Figure A1
Air flux tester
To the center
1-pulse reset switch; 2-zero adjustment switch: 3-full scale switch; 4-reducer; 5-locking screw; 6-fine adjustment; 7-contact rod; 8-overflow cap; 9-electric connector; 10-high pressure container; 11-high pressure valve: 12-high pressure gauge; 13-pulse counter; 14-timing switch; 15-power switch; 16-pump switch; 17-pump stop switch; 18-motor switch; 19-oil drain switch; 20-exhaust switch; 21-recording switch Figure A2 Mercury pressure meter6, 8, 9-regulating valve; 7-tester Figure A1
Air flux tester
To the center
1-pulse reset switch; 2-zero adjustment switch: 3-full scale switch; 4-reducer; 5-locking screw; 6-fine adjustment; 7-contact rod; 8-overflow cap; 9-electric connector; 10-high pressure container; 11-high pressure valve: 12-high pressure gauge; 13-pulse counter; 14-timing switch; 15-power switch; 16-pump switch; 17-pump stop switch; 18-motor switch; 19-oil drain switch; 20-exhaust switch; 21-recording switch Figure A2 Mercury pressure meter
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.