Some standard content:
Items 1.3.5 and 4.6 of 4.1.4.2 and 4.5 of this standard are mandatory, and the rest are recommended. GB 19342—2003
This standard specifies the technical requirements for the speed of toothbrush bristle bundles in accordance with 15C 8627:19874 Dentistry—Toothbrush bristle bundle speed. This standard replaces the previous standard QB1659-1997 for toothbrushes in the light industry. Compared with QB1659-1997, this standard adds the following requirements for the heat content of heavy metals in the product and the test method. The requirements for the strength of toothbrush bristles and the test method are the same as 108627108 Dentistry—Toothbrush bristle bundle strength. The two appendices A and B of this standard are regulatory appendices. This standard was proposed by the China Light Industry Federation. This standard shall be managed by the National Center for Standardization of Oral Products. This standard was drafted by the National Oral Products Standardization Center, the National Oral Products Inspection and Testing Center, Shanghuo Sance Co., Ltd., Yangzhou Lijing Industry Co., Ltd., Tuozhou Mingjing Tooth Co., Ltd., Chazhou Jinsong Rate Collection Products Co., Ltd., Kongjie (China) Co., Ltd., Yangzhou Xinda Industry Co., Ltd., Shilu Daily Products Industry (Nanning) Co., Ltd., and the main contributors of this standard are: Li Chuanhe, Yingyongxing, Chang Zhaozhong, Zhang Wensheng, Bei Ni, Gan Ping, Chuxing, Ji Zhiyi. 1
1 Scope
GD19342—2003
This standard specifies the product classification, technical requirements, test methods, inspection specifications, specifications, packaging, shipping boxes, and storage of dental implants: This standard is applicable to adult, juvenile, and animal dental implants. This standard is not applicable to special toothbrushes (such as rubber-filled bristle toothbrushes) and functional toothbrushes (such as electric toothbrushes). 2 Normative references || tt || The clauses in the following documents become clauses of this standard through the application of this standard. For all referenced documents with a date, all subsequent amendments (excluding errata) or revised versions are not applicable to this standard. However, the parties who reach an agreement based on this standard are encouraged to investigate whether the latest versions of these documents can be used. For all referenced documents without a date, their latest versions are applicable to this standard. GB/T2828-1987 Batch inspection counting sampling procedure and sampling table (commonly applicable to continuous batch inspection) GB/T2R29-1987 Periodic inspection counting sampling Sampling table (qualitative inspection of production process) GB/T66821992 Specifications and test methods for analytical laboratories (GB/T668219923696:1997) 3 Product classification
According to product specifications, it is divided into adult toothbrushes, children's toothbrushes, and infant toothbrushes 4 Technical requirements
4.T Hygiene requirements
4.1.1 The bristles, handles, and heads should not be discolored. 4.1.2 All parts of the toothbrush should be clean, especially dirt. 4.1.3 Products sold must be packaged.
4.2 Safety requirements
4.2.1 The shape of the toothbrush and its parts should be optical, without sharp edges and burrs. The shape of the handle and tail should not cause harm to people. 4.2.2 Harmful elements The actual content of harmful elements such as chlorine, chlorine, chlorine, or any harmful compound composed of these elements in the product shall not exceed the effective value in Table 1.
Product name
4.3 Specifications
The size should meet the requirements of Figure 1 and Table 2.
Unit is GB19342—2003
Length (4)
6 Gram (D)
Head diameter (C)
Single yarn point diameter
4,4 Bundle strength
Flat type E
Flat type E
Small number
The bundle strength classification should be clearly stated on the product packaging, and the product should be classified as B6. Physical properties
Physical properties should meet the requirements of Table 3:
4. 6 sanding
6 bundle pulling
handle resistance is large
neck resistance
monofilament output will be
adults can use
within the limit range
limited
children can use
unit is plug*
children and system
special
60N or deformation limit range
25 shape limit||tt ||(a12:h silver heat 5mir open book
brush the top of the single wheel must remove the sharp negative, and should not be in the flying division. Correct and small single wire top profile Figure 2: 1) shows: flat bristle toothbrush system and single wire original stealing wheel rate qualified rate method open shadow bristle type tooth ground system bristle single can sell wheel rate qualified) correct single wheel
》incorrect single wire thin light
4.7 Appearance quality
The appearance quality or should comply with the provisions of Table 1.
Hair and cracks
5 Test methods
5. 1 Hygiene requirements
The surface of the cloth should not be stained by the light, and no visible bubbles are allowed. The bubbles are only for a short time, and the soft opening is in 5.1. Test method: Use cotton soaked with 65% ethanol, brush the end of the brush, brush it three times and wipe it 100 times, and check whether there is color on the cotton.
5.1.2 Check whether the parts of the brush meet the requirements of 4.1.2. 5.1.3 The product package for sale is qualified if it is not smooth before use. 5.2 Safety requirements 5.2.1 The toothbrush headband and handle should be 30nm sharp under natural light or 40W light and checked by hand: 5.2.2 Test method A: 5.3 Dimensions should be measured with a vernier ruler with a scale of 2mm, a micrometer with a scale of 3.01um and a ruler with an accuracy of 0.5mm. 5.2 Bristle strength Determination of sound intensity of toothbrushes Test method Appendix B. 5.5 Physical properties 5.5.1 Tensile strength of bristles 5.5.1.1 Test equipment: Test the bristles (with a force not greater than 100N). Do not cut off the bristles during the test. 5.5.1.2 Sample preparation: Each toothbrush has a bristle bundle, and the rest of the bristles are removed. 5.5.1.3 Test conditions: (2015)℃, constant temperature, temperature (2C-5)t test agent rise rate is uniform (10C·0)mm/mir. 5.5.1.4 During the whole test, connect the head to the lower light holder of the test machine through the other head type tool - upward), connect the three-way holder of the test machine to the brush and aim at the text, and take the acid hair when the test emulsion is set (other box 3). 1-
Specification:
Use head:
Previous,
Previous,
GL19342-2003
5.5.2 Handle bending strength
5.5.2.1 Test equipment: U~SUN tensile testing machine with reverser, 5.5.2.2 Test preparation: From the top of the head to 50mm (50mm for children's toothbrush and 40mm for infant toothbrush) as the first mark, make the second mark 65mm below this mark, at temperature (20±)T recording, keep for 1h, 5.5.2.3 Test conditions, temperature (20±=), the descending speed of the test machine is uniform (.00±10)mm/min + pressure head radius 6mm: act on the middle part of the span.
5.5.2.4 Test steps: Place the sample on the support, align the two marks, right two fulcrums, brush downward, the pressure head acts vertically on the axis of the sample, start the test machine, read the reading when the sample breaks or drop 3m from the head contacting the sample (25mm for children's toothbrush, 20mm for children's toothbrush), stop loading when the sample is still broken (see Figure 4). 3
One out of the failure
sample;
5.5.9 Neck deformation resistance
5.5.3.1 Test device: Tensile testing machine with a range not greater than 100N), steel wire, brush handle rate tool. 5.5.3.2 Sample preparation: For adult teeth, measure from the top of the brush head to 15mm (for children's toothbrushes, take 10mm, and for children's toothbrushes, take 10mm) as the first mark, and then measure from the top to 80mm (for children's toothbrushes, take 5mm, and for infant toothbrushes, take 5Vmm) as the second mark. Under the condition of humidity (20±5)℃, overflow 41r,
5.5.3.3 Test conditions, temperature (20±5)℃, test machine lifting speed is (100±10)mru/urim. 5.5.3.4 Test steps: fold the wire with a diameter of 2mm and a width of about 250mm in half and put it in the upper clamp of the test machine. The brush handle is inserted into the brush handle and fixed at the second mark (the brush bristles face downward). The handle is connected to the lower holder of the test machine. The wire is at the first mark (Figure 5). Start the test machine and stop when the number of connections or the curvature limit of the sample is still continuous. 3
Upper holder
Brush type
Lower holder;
5.5.4 Temperature resistance
5.5.41 Test placement, constant water level,
5.5.4.2 Test sample: Sampling according to the requirements of type inspection. GB19342-2003
5.5.4.3 Test steps: Put the sample in the water at 5023 for 20 minutes. min, after taking out, there is no abnormality in the hair, 5.5.5 Single wire bending recovery rate
5.5.5.1 Test equipment, constant water, gold plate-decision, drill five holes with a diameter (L,5=0.1)mm (see Figure 5). 50
5,5.5.2 Sample preparation, take a single wire from the tooth. 5.5.5.3 Test conditions and teeth, take a single outer root (take a straight part), gently put it into the hole, the protruding part cannot be larger than half of the hole, single The method of inserting the wire is shown in Figure ?. Put the diamond plate together with the sample in (50±2) water for 11 minutes, take it out and then immerse it in (±2) water for 30 minutes, then take it out, then gently take the sample out of the hole and immerse it in (20±2) water for 5 minutes, then put the sample on a flat surface and calibrate five B angles respectively (Figure 7). Figure 7
Incorrect
5.5.5.4 Calculate it: Take the average value of the five measured sun angles (in degrees) - according to the formula ( 1) Calculate the recovery rate of single-filament bend (%) = 8/150 × 1005.6 Nose hair (test of grinding single-filament neck round nodules) Field 8
5.6.1 Flat to type teeth: Take any point on the hair surface of the tree hair, remove the three points after heating, stick them on the paper, observe with a microscope of more than 30 times, and calculate the qualified rate according to formula (2).
5.6.2 Color curved teeth: Take a point on the hair height, middle and lower front and upper sides, take the hair bundle at this point, and stick it on the paper. Observe with a frequency microscope of 0 times or more, and calculate the qualified rate according to formula (2): qualified rate (%) = m × 1M
qualified number of sheep silk collars;
total number of single stewed samples,
5.7 Appearance quality
Under the self-heating light, the tooth is measured at a distance of 1m from the manufacturer, and the gas trap in the handle is replaced with a standard dust for comparison and inspection. 6 Inspection rules
6.1 Inspection classification
Inspection is divided into factory inspection and type inspection, GB 19342-2003
6.2 Factory inspection
From the time of display, all goods are put through factory inspection before production. Products are released after being inspected and certified by the quality inspection department of the production plant, and are accompanied by a statement of use and inspection certificate. 6.2.1 Products of the same production period are considered as one batch during factory inspection. 6.2.2 Factory inspection shall be carried out in accordance with GT/T2828-1987, using the normal control plan of S-3 inspection level. The inspection shall be carried out once, and the AQ value shall be shown in Table 5. If one item of each single product is not in compliance with the standard, the sample shall be deemed unqualified. Table 5
Transfer item
Pores and cracks
6.2.3 If the first inspection is judged as unqualified, double the number of products from the batch can be selected. Re-inspection shall be conducted on the unqualified products. If one item is still not met after re-inspection, the batch of products shall be judged as unqualified and the batch of products shall be delivered after exhaustion. 6.3 Type inspection
6.3.1 The following situations shall be subject to type inspection: Trial type inspection of new production plants or old products transferred to the factory for production: 15)
After formal production, if there are major changes in structure, materials, and processes that may affect the performance of the product, after normal production, the batch of products shall be sampled and inspected at least once a year; after product control and inspection, when the inspection results are significantly different from those of the previous type inspection; when quality supervision and inspection are carried out, 24 products shall be randomly selected from the qualified products of the factory inspection and all technical requirements shall be inspected. The quantitative test is carried out in accordance with 6:15/2829-1987, and the sub-axis sampling scheme of the judgment level is adopted. The basic classification, inspection item proportion, technical requirements, sample number, unqualified quality level QL, and judgment group are shown in Table 6. Table 6
Inspection items
Brush head urine part
All indicators
Light before electricity health
Resistant performance
Technical requirements Health model
4, 1, E
Table 3 Anti-1
Table 3 Item 2
Item 3
Table 3 Item 1
Record cleaning effect
.. h. t
Combined classification
Group teaching
Judgment syndrome group
No integration explicit requirements are judged as no bridge
Qualification inspection items
Technical requirements
Table 6 (continued)
Missing inspection system
If Class A, Class B, Class C have…-item unqualified, the type inspection is unqualified, 6.3.4
Marking, packaging, transportation, storage 7.tMarking
Six samples
B19342—2003
Sample fee
The following Chinese content should be stored on the product or sales unit packaging: product name, factory name, factory address, product standard number, beam strength grade, in order to have the product quality inspection qualified mark, 7.2 Packaging
The product packaging box must be firm and without damage, and should have the following Chinese label Note: Product name, model, quantity, volume, factory name, factory address, and storage symbol.
7.3 Transportation
The product should be transported with care to prevent leakage and re-compression. 7.4 Storage
The product should be stored in a dry, ventilated warehouse away from moisture and humidity, GB19342-2003
A.1 Principle
Appendix A||tt ||(Model Record)
Testing of harmful elements
Soluble elements are extracted from product materials under the following simulated conditions: simulate the dissolution effect of materials after being swallowed and continuously in contact with acid for a period of time, and use an analytical method with an appropriate detection limit to determine the residual elements with high detection limits: A.2 Wipes and Receivers
2.1 Test Conditions
Analytical pure test materials should be used in the analytical test
A, 2.1.1 Hydrochloric acid solution 1:1 (HCl) (c.7 + 0.005> mol / mol). A.2.1.2 Slightly 2:1 Hydrochloric acid solution 2:1 (HCl) about 2 ol / mol. A.2.1.3 Water Water - should be of grade 3 purity as specified in GB/T66R2 1992. A.2.2 Resin. Conventional experimental equipment includes the following. A.2.2.1 PH value tester Accuracy: ± 0.2 pH unit A.2.2.2 Constant temperature stirring tool The concentration during stirring is set to (37 ± 2)%.
A.2.2.3 Chemical mass
The total volume is 1.5 to 5.0 times the volume of the test sample. A.3 Test sample sampling procedure
At room temperature, use mechanical scraping or shearing method to sample the non-conductive material or color from the test lamp. The length of each sample should not exceed 6m. Materials with less than 1Umg are exempted from testing. A.4 Extraction procedure
Use a suitable container and, while ensuring that the sample is not contaminated, mix 50% of the test sample with 5.0/mol/L hydrochloric acid with a concentration of 37:2 with the test sample. Shake for 1min and check the acidity of the mixture. If the pH value is greater than 1.5, add about 2 mol/L hot single melt 2 dropwise while shaking the mixture until the pH value reaches 1.0~. 5. Protect the mixture from light, stir at 37±2℃ for 1h, and then place at 37=2℃ for 1h. The test should be completed within 24 hours. If the storage time before the analysis is more than 1 working day, use acid to determine the storage solution density of about 1ml/1.
The above three steps are the preparation and collection of samples for water content. A.5 Analysis of the above elements in the sample A.5, 1.A. 5.2.A, 5.H,A, 5.4,A, b,..8
A5.1 Flameless Atomic Absorption Method
CB19342—2003
In case of dispute over the test results, the flameless atomic absorption method should be used as an alternative method. In general, other methods may be used after agreement between the parties concerned.
A.5.1.1 Principle
Use a reducing source (K+H) to react with the compound in the sample in the evaporation liquid to generate a gaseous compound. Then, the compound is sent into a metal absorption tube by hydrogen, nitrogen or compressed air, and the absorption value of the selected spectrum emitted by the hollow pole lamp is measured: wavelength 193.1nm.
A, 5.1.2 Reagents and materials
Price: The product chain is packed in a cylinder,
A. 5.1.2.1
A.5.1.2.2 Sodium hydroxide solution, 5/L.
Borohydride filter: Take potassium hydroxide (KRH,>5B) and filter it with a dark filter (A, 5.1.2.2>Zn at 500mE. Content 1. 5.1.2. 3
A.5.1.2.4
Late solution: 5% (mass ratio)
A.5.1.2.5 Standard mother solution, each containing 1uUm1 of seed. This standard mother solution contains 1% of seed.
A.5.1.2.6 Standard solution in a grid, each containing 1(0mg of seed. This solution should be prepared using a pipette A.5.1.3.>Pipette the standard solution (A.5.1,2.3IUL) in a 1OHmI single-shot reverse flow tube, dilute to the scale with hydrochloric acid solution (A.5.1.2.4) and fully dilute to 1mI. . Chemical quasi-submersible liquid contains 1.
A.5.1.3 Apparatus
A,5.1.3.1 Atomic absorption spectrometer, suitable for measuring at a wavelength of 193.7nm, A.5.1.3.2
Hydride generator.
A,5.1.3.3 Cathode lamp
A.5.1.3.4 Burette, 25mL,
A,5.1.3.5 Transfer tube, 1cmI.
A.5.1.3.6 Single-scale volumetric flask: 100nL, 50(nL, 1(cmL, A. 5.1, 4 Optional steps
4.5.1.4.1 Preparation of standard curve
4.5.1.4.1.1 Preparation of standard comparison solution This solution should be prepared at the time of use.
Put the agreed number of samples (A.5.1.2.62) in Table A.1 into a set of six 100 mL single-scale containers (A.5.1.3.6) and mix with salt and sugar sequence (A.5.1.2. 4) Dilute to the mark and fully agitate. Table A1
Standard comparison of barrier fluids
Let: The center is empty and the solution is dissolved.
Standard comparison of the relative quality of the fluid:
19342—2003
A 5.1. 4.1. 2 Optical error determination
Install the arsenic spectrum source (A.5, .3.31) on the spectrometer (A.5.1.3.1), use the maximum setting as the monument, adjust the instrument end according to the manufacturer's instructions, adjust the single light source to 1.7nm. In order to obtain a significantly larger aldehyde intensity, adjust the flow rate of the reagent gas (A.5.1.2.1) according to the characteristics of the hydride generator, adjust the potassium hydride solution (A.5.1.2.3) and the standard comparison sieve (A.5.1.4.1.1), and measure the rate. Send each standard comparison solution (A.5.1.4.1.1) into the hydride generator (A.5.1.3.2) respectively, and repeatedly use the standard furnace to check whether the device has reached the setting. Between each measurement, water should be sucked into the ventilation tube to ensure that the lifting volume is kept at the same level. A.5.1.4.1.3 Standard curve
The standard salt () contained in the above standard comparison solution is used as the horizontal axis, and the absorbance of the corresponding solution minus the value of the blank comparison solution is used as the coordinate.
1.5.1.4.2 Test standard
The standard obtained according to the steps in Chapter 4
A.5.1.4.3 Blank test solution
Take the blank test solution 1 (A.2.1.1) as the blank solution. A.5.1.5 Expression of results
The test sample content is calculated according to formula (A.1). X-{-×V×F
or;
the total amount of sodium in the sample, in milligram per dry mass (tng/kg); the content of sodium in the sample, in milligram per milliliter (/mL; the content of sodium in the blank solution, in gram per liter (mg/mL): -
the volume of the sample, in mL)
the weight of the sample, in gram (g)
F-the explanation of the cause.
A.5.2 Determination of the content of the sample - Flame atomic absorption spectrometry (A.1)
In case of dispute over the test results, the flame atomic absorption spectroscopy (AAS) shall be used as the standard method. In such cases, the method may be used after agreement between the parties concerned.
A.5.2.1 Principle
The sample is placed in a block air flame and the absorption edge of the selected spectral line emitted by a hollow cathode lamp or an electrodeless discharge lamp is measured at a wavelength of 228.8 nm.
A, 5.2. 2 Reagents and materials A5.2.2.1 Acetylene, commercially available, in cylinders. A.5.2.2.2 Pressurized gas A5.2.2.3 Standard liquid: A 1000 liter volumetric volumetric flask containing 1 g of acetylene shall be prepared as follows: a) Take a standard liquid containing exactly 1 g of acetylene in a 1020 ml volumetric flask, dilute it to the mark with saline (A, 2.1.1), and distribute it with water: a) Take a standard liquid containing exactly 1 g of acetylene in a 1020 ml volumetric flask, dilute it to the mark with saline (A, 2.1.1), and distribute it with water: b) Dissolve the required saline in 1000 liter volumetric flask containing 1 g of acetylene in a 1020 ml volumetric flask with saline (A, 2.1.1), and dissolve it in hydrochloric acid (A.2.1.2), dilute to the mark with isotropic acid, and mix thoroughly. e) Accurately collect 1g of the solution (accurate to 1mg) in 1cc/3ml single-dose volumetric precipitate, dissolve with a minimum amount of concentrated acid (m/s = 0.18g/ml), dilute to 2.173 mark with 7A of acid solution, and mix thoroughly. 10
This standard solution is 1.
A.5.2.2.4 times the standard solution, containing 1mg per liter. This solution should be prepared at the time of use.
G19342—2003
Use a pipette to collect the sample: A.5.2.2.3) 10 in a 1cc/0ml single-dose volumetric flask. Dilute to the dosage with industry vaccine 1 (A.2.1.1) and shake thoroughly. 1m1. This standard box contains 10R-
A 5.2.3 receiver
and the following instruments: A.5.2.3.1 Large average original character collection spectrometer, with a burner for measuring at 223,8rm and 7 far air,
A,5.2.3.2 Variable center detector lamp or light-sensitive lamp. A.5.2.3.3 Burette; 5l ml.
A.5.2.3.4 Single-scale volumetric flask; 0 m.0riL. A.5.2.4 Operation steps
A.5.2.4.1 Preparation of standard curve
A.5.2.4.1.1 Preparation of standard comparison solution
Add the volume of the standard solution (4.5.2.2.4) in the titration head (A.3.2.3.3) to a group of five 10-well solution (A.5.3.2.4), dilute with hydrochloric acid (A.2.1.1) to the ratio, and divide evenly. Table A.2
Standard comparison solution
No. is blank comparison solution,
4.5.2.4.1.2 Spectrometric determination
Volume of standard solution>5B month oxidation fishing dark filter (A, 5.1.2.2> wrong new in 500mE. content 1. 5. 1. 2. 3
A.5.1.2.4
night dissolution: 5% (mass ratio)
A, 5.1.2.5 God standard mother microliter, each opening contains God 1uUm1 This standard mother solution contains seeds "%.
A.5.1.2.6 Clock standard in the grid, each liter contains seeds 1(0mg. This solution should be used in Feng Da prepared
Use pipette A, .1.3.> Absorb the standard Dan solution (A, 5, 1, 2.3IUL in a 1OHmI single-point reverse penetration, dilute with hydrochloric acid solution (A.5.1.2.4} to the scale: and fully according to the hook. 1mI . Chemical quasi-submersible liquid contains 1.
A.5.1.3 Apparatus
A,5.1.3.1 Atomic absorption spectrometer, suitable for measuring at a wavelength of 193.7nm, A.5.1.3.2
Hydride generator.
A,5.1.3.3 Cathode lamp
A.5.1.3.4 Burette, 25mL,
A,5.1.3.5 Transfer tube, 1cmI.
A.5.1.3.6 Single-scale volumetric flask: 100nL, 50(nL, 1(cmL, A. 5.1, 4 Optional steps
4.5.1.4.1 Preparation of standard curve
4.5.1.4.1.1 Preparation of standard comparison solution This solution should be prepared at the time of use.
Put the agreed number of samples (A.5.1.2.62) in Table A.1 into a set of six 100 mL single-scale containers (A.5.1.3.6) and mix with salt and sugar sequence (A.5.1.2. 4) Dilute to the mark and fully agitate. Table A1
Standard comparison of barrier fluids
Let: The center is empty and the solution is dissolved.
Standard comparison of the relative quality of the fluid:
19342—2003
A 5.1. 4.1. 2 Optical error determination
Install the arsenic spectrum source (A.5, .3.31) on the spectrometer (A.5.1.3.1), use the maximum setting as the monument, adjust the instrument end according to the manufacturer's instructions, adjust the single light source to 1.7nm. In order to obtain a significantly larger aldehyde intensity, adjust the flow rate of the reagent gas (A.5.1.2.1) according to the characteristics of the hydride generator, adjust the potassium hydride solution (A.5.1.2.3) and the standard comparison sieve (A.5.1.4.1.1), and measure the rate. Send each standard comparison solution (A.5.1.4.1.1) into the hydride generator (A.5.1.3.2) respectively, and repeatedly use the standard furnace to check whether the device has reached the setting. Between each measurement, water should be sucked into the ventilation tube to ensure that the lifting volume is kept at the same level. A.5.1.4.1.3 Standard curve
The standard salt () contained in the above standard comparison solution is used as the horizontal axis, and the absorbance of the corresponding solution minus the value of the blank comparison solution is used as the coordinate.
1.5.1.4.2 Test standard
The standard obtained according to the steps in Chapter 4
A.5.1.4.3 Blank test solution
Take the blank test solution 1 (A.2.1.1) as the blank solution. A.5.1.5 Expression of results
The test sample content is calculated according to formula (A.1). X-{-×V×F
or;
the total amount of sodium in the sample, in milligram per dry mass (tng/kg); the content of sodium in the sample, in milligram per milliliter (/mL; the content of sodium in the blank solution, in gram per liter (mg/mL): -
the volume of the sample, in mL)
the weight of the sample, in gram (g)
F-the explanation of the cause.
A.5.2 Determination of the content of the sample - Flame atomic absorption spectrometry (A.1)
In case of dispute over the test results, the flame atomic absorption spectroscopy (AAS) shall be used as the standard method. In such cases, the method may be used after agreement between the parties concerned.
A.5.2.1 Principle
The sample is placed in a block air flame and the absorption edge of the selected spectral line emitted by a hollow cathode lamp or an electrodeless discharge lamp is measured at a wavelength of 228.8 nm.
A, 5.2. 2 Reagents and materials A5.2.2.1 Acetylene, commercially available, in cylinders. A.5.2.2.2 Pressurized gas A5.2.2.3 Standard liquid: A 1000 liter volumetric volumetric flask containing 1 g of acetylene shall be prepared as follows: a) Take a standard liquid containing exactly 1 g of acetylene in a 1020 ml volumetric flask, dilute it to the mark with saline (A, 2.1.1), and distribute it with water: a) Take a standard liquid containing exactly 1 g of acetylene in a 1020 ml volumetric flask, dilute it to the mark with saline (A, 2.1.1), and distribute it with water: b) Dissolve the required saline in 1000 liter volumetric flask containing 1 g of acetylene in a 1020 ml volumetric flask with saline (A, 2.1.1), and dissolve it in hydrochloric acid (A.2.1.2), dilute to the mark with isotropic acid, and mix thoroughly. e) Accurately collect 1g of the solution (accurate to 1mg) in 1cc/3ml single-dose volumetric precipitate, dissolve with a minimum amount of concentrated acid (m/s = 0.18g/ml), dilute to 2.173 mark with 7A of acid solution, and mix thoroughly. 10
This standard solution is 1.
A.5.2.2.4 times the standard solution, containing 1mg per liter. This solution should be prepared at the time of use.
G19342—2003
Use a pipette to collect the sample: A.5.2.2.3) 10 in a 1cc/0ml single-dose volumetric flask. Dilute to the dosage with industry vaccine 1 (A.2.1.1) and shake thoroughly. 1m1. This standard box contains 10R-
A 5.2.3 receiver
and the following instruments: A.5.2.3.1 Large average original character collection spectrometer, with a burner for measuring at 223,8rm and 7 far air,
A,5.2.3.2 Variable center detector lamp or light-sensitive lamp. A.5.2.3.3 Burette; 5l ml.
A.5.2.3.4 Single-scale volumetric flask; 0 m.0riL. A.5.2.4 Operation steps
A.5.2.4.1 Preparation of standard curve
A.5.2.4.1.1 Preparation of standard comparison solution
Add the volume of the standard solution (4.5.2.2.4) in the titration head (A.3.2.3.3) to a group of five 10-well solution (A.5.3.2.4), dilute with hydrochloric acid (A.2.1.1) to the ratio, and divide evenly. Table A.2
Standard comparison solution
No. is blank comparison solution,
4.5.2.4.1.2 Spectrometric determination
Volume of standard solution>5B month oxidation fishing dark filter (A, 5.1.2.2> wrong new in 500mE. content 1. 5. 1. 2. 3
A.5.1.2.4
night dissolution: 5% (mass ratio)
A, 5.1.2.5 God standard mother microliter, each opening contains God 1uUm1 This standard mother solution contains seeds "%.
A.5.1.2.6 Clock standard in the grid, each liter contains seeds 1(0mg. This solution should be used in Feng Da prepared
Use pipette A, .1.3.> Absorb the standard Dan solution (A, 5, 1, 2.3IUL in a 1OHmI single-point reverse penetration, dilute with hydrochloric acid solution (A.5.1.2.4} to the scale: and fully according to the hook. 1mI . Chemical quasi-submersible liquid contains 1.
A.5.1.3 Apparatus
A,5.1.3.1 Atomic absorption spectrometer, suitable for measuring at a wavelength of 193.7nm, A.5.1.3.2
Hydride generator.
A,5.1.3.3 Cathode lamp
A.5.1.3.4 Burette, 25mL,
A,5.1.3.5 Transfer tube, 1cmI.
A.5.1.3.6 Single-scale volumetric flask: 100nL, 50(nL, 1(cmL, A. 5.1, 4 Optional steps
4.5.1.4.1 Preparation of standard curve
4.5.1.4.1.1 Preparation of standard comparison solution This solution should be prepared at the time of use.
Put the agreed number of samples (A.5.1.2.62) in Table A.1 into a set of six 100 mL single-scale containers (A.5.1.3.6) and mix with salt and sugar sequence (A.5.1.2. 4) Dilute to the mark and fully agitate. Table A1
Standard comparison of barrier fluids
Let: The center is empty and the solution is dissolved.
Standard comparison of the relative quality of the fluid:
19342—2003
A 5.1. 4.1. 2 Optical error determination
Install the arsenic spectrum source (A.5, .3.31) on the spectrometer (A.5.1.3.1), use the maximum setting as the monument, adjust the instrument end according to the manufacturer's instructions, adjust the single light source to 1.7nm. In order to obtain a significantly larger aldehyde intensity, adjust the flow rate of the reagent gas (A.5.1.2.1) according to the characteristics of the hydride generator, adjust the potassium hydride solution (A.5.1.2.3) and the standard comparison sieve (A.5.1.4.1.1), and measure the rate. Send each standard comparison solution (A.5.1.4.1.1) into the hydride generator (A.5.1.3.2) respectively, and repeatedly use the standard furnace to check whether the device has reached the setting. Between each measurement, water should be sucked into the ventilation tube to ensure that the lifting volume is kept at the same level. A.5.1.4.1.3 Standard curve
The standard salt () contained in the above standard comparison solution is used as the horizontal axis, and the absorbance of the corresponding solution minus the value of the blank comparison solution is used as the coordinate.
1.5.1.4.2 Test standard
The standard obtained according to the steps in Chapter 4
A.5.1.4.3 Blank test solution
Take the blank test solution 1 (A.2.1.1) as the blank solution. A.5.1.5 Expression of results
The test sample content is calculated according to formula (A.1). X-{-×V×F
or;
the total amount of sodium in the sample, in milligram per dry mass (tng/kg); the content of sodium in the sample, in milligram per milliliter (/mL; the content of sodium in the blank solution, in gram per liter (mg/mL): -
the volume of the sample, in mL)
the weight of the sample, in gram (g)
F-the explanation of the cause.
A.5.2 Determination of the content of the sample - Flame atomic absorption spectrometry (A.1)
In case of dispute over the test results, the flame atomic absorption spectroscopy (AAS) shall be used as the standard method. In such cases, the method may be used after agreement between the parties concerned.
A.5.2.1 Principle
The sample is placed in a block air flame and the absorption edge of the selected spectral line emitted by a hollow cathode lamp or an electrodeless discharge lamp is measured at a wavelength of 228.8 nm.
A, 5.2. 2 Reagents and materials A5.2.2.1 Acetylene, commercially available, in cylinders. A.5.2.2.2 Pressurized gas A5.2.2.3 Standard liquid: A 1000 liter volumetric volumetric flask containing 1 g of acetylene shall be prepared as follows: a) Take a standard liquid containing exactly 1 g of acetylene in a 1020 ml volumetric flask, dilute it to the mark with saline (A, 2.1.1), and distribute it with water: a) Take a standard liquid containing exactly 1 g of acetylene in a 1020 ml volumetric flask, dilute it to the mark with saline (A, 2.1.1), and distribute it with water: b) Dissolve the required saline in 1000 liter volumetric flask containing 1 g of acetylene in a 1020 ml volumetric flask with saline (A, 2.1.1), and dissolve it in hydrochloric acid (A.2.1.2), dilute to the mark with isotropic acid, and mix thoroughly. e) Accurately collect 1g of the solution (accurate to 1mg) in 1cc/3ml single-dose volumetric precipitate, dissolve with a minimum amount of concentrated acid (m/s = 0.18g/ml), dilute to 2.173 mark with 7A of acid solution, and mix thoroughly. 10
This standard solution is 1.
A.5.2.2.4 times the standard solution, containing 1mg per liter. This solution should be prepared at the time of use.
G19342—2003
Use a pipette to collect the sample: A.5.2.2.3) 10 in a 1cc/0ml single-dose volumetric flask. Dilute to the dosage with industry vaccine 1 (A.2.1.1) and shake thoroughly. 1m1. This standard box contains 10R-
A 5.2.3 receiver
and the following instruments: A.5.2.3.1 Large average original character collection spectrometer, with a burner for measuring at 223,8rm and 7 far air,
A,5.2.3.2 Variable center detector lamp or light-sensitive lamp. A.5.2.3.3 Burette; 5l ml.
A.5.2.3.4 Single-scale volumetric flask; 0 m.0riL. A.5.2.4 Operation steps
A.5.2.4.1 Preparation of standard curve
A.5.2.4.1.1 Preparation of standard comparison solution
Add the volume of the standard solution (4.5.2.2.4) in the titration head (A.3.2.3.3) to a group of five 10-well solution (A.5.3.2.4), dilute with hydrochloric acid (A.2.1.1) to the ratio, and divide evenly. Table A.2
Standard comparison solution
No. is blank comparison solution,
4.5.2.4.1.2 Spectrometric determination
Volume of standard solution62 parts of the volume were added to a set of six 100 mL single-scale containers (A5.1.3.6), diluted to the mark with salt and sugar chain (A5.1.2.4), and thoroughly mixed. Table A1
Standard comparison solution
Let: The center is empty.
Standard comparison solution (A5.1,2,6) /
Standard comparison solution The relative concentration in the flow:
19342—2003
A5.1.4.1. 2 Optical error determination
Install the arsenic spectrum source (A.5, .3.31) on the spectrometer (A.5.1.3.1), set it to the maximum value, adjust the instrument end according to the manufacturer's instructions, adjust the single light source to 1.7nm. To obtain a significant aldehyde light intensity, adjust the flow rate of the reagent gas (A.5.1.2.1> according to the characteristics of the hydride generator, and adjust the potassium hydride solution (A.5.1.2.3) and the standard comparison screen (A.5.1.4.1.1) to the desired level. The measurement is carried out at the same rate. Send each standard comparison solution (A.5.1.4.1.1) into the hydride generator (A.5.1.3.2) respectively, and repeatedly use the standard furnace to check whether the device has reached the setting. Between each measurement, water should be sucked into the ventilation tube to ensure that the desired level is maintained. A 5.1. 4.1.3 Standard curve
The standard salt () contained in the above standard comparison solution is used as the horizontal axis, and the absorption value of the corresponding solution minus the blank comparison solution is used as the coordinate.
1.5.1.4.2 Test standard
The standard is obtained according to the steps in Chapter 4
A.5.1.4.3 Blank test solution
Take the blank test solution 1 (Figure 2.1.1) as the blank solution. 4.5.1.5 Expression of results
The test sample content is expressed according to the formula (A. 1) Calculation. X-{-×V×F
or
the content of sodium ions in the sample, in milligrams per dry weight (tng/kg); the content of sodium ions in the sample, in milligrams per milliliter (/mL); the content of sodium ions in the blank solution, in grams per liter (mg/mL);-
the volume of the sample, in milliliter)
the weight of the sample, in grams (g)
F-the basis.
A.5.2 Determination of sodium ions - Flame Atomic Absorption Spectrometry ( A.1) In case of dispute over test results, flame atomic absorption spectroscopy (AAS) shall be used as the standard method. In such cases, the method may be used upon agreement between the parties concerned. A.5.2.1 Principle The sample is placed in a block air flame and the absorption edge of the selected spectral line emitted by a hollow cathode lamp or an electrodeless discharge lamp is measured at a wavelength of 228.8 nm. A, 5.2. 2 Reagents and materials A5.2.2.1 Acetylene, commercially available, in cylinders. A.5.2.2.2 Pressurized gas A5.2.2.3 Standard liquid: A 1000 liter volumetric volumetric flask containing 1 g of acetylene shall be prepared as follows: a) Take a standard liquid containing exactly 1 g of acetylene in a 1020 ml volumetric flask, dilute it to the mark with saline (A, 2.1.1), and distribute it with water: a) Take a standard liquid containing exactly 1 g of acetylene in a 1020 ml volumetric flask, dilute it to the mark with saline (A, 2.1.1), and distribute it with water: b) Dissolve the required saline in 1000 liter volumetric flask containing 1 g of acetylene in a 1020 ml volumetric flask with saline (A, 2.1.1), and dissolve it in hydrochloric acid (A.2.1.2), dilute to the mark with isotropic acid, and mix thoroughly. e) Accurately collect 1g of the solution (accurate to 1mg) in 1cc/3ml single-dose volumetric precipitate, dissolve with a minimum amount of concentrated acid (m/s = 0.18g/ml), dilute to 2.173 mark with 7A of acid solution, and mix thoroughly. 10
This standard solution is 1.
A.5.2.2.4 times the standard solution, containing 1mg per liter. This solution should be prepared at the time of use.
G19342—2003
Use a pipette to collect the sample: A.5.2.2.3) 10 in a 1cc/0ml single-dose volumetric flask. Dilute to the dosage with industry vaccine 1 (A.2.1.1) and shake thoroughly. 1m1. This standard box contains 10R-
A 5.2.3 receiver
and the following instruments: A.5.2.3.1 Large average original character collection spectrometer, with a burner for measuring at 223,8rm and 7 far air,
A,5.2.3.2 Variable center detector lamp or light-sensitive lamp. A.5.2.3.3 Burette; 5l ml.
A.5.2.3.4 Single-scale volumetric flask; 0 m.0riL. A.5.2.4 Operation steps
A.5.2.4.1 Preparation of standard curve
A.5.2.4.1.1 Preparation of standard comparison solution
Add the volume of the standard solution (4.5.2.2.4) in the titration head (A.3.2.3.3) to a group of five 10-well solution (A.5.3.2.4), dilute with hydrochloric acid (A.2.1.1) to the ratio, and divide evenly. Table A.2
Standard comparison solution
No. is blank comparison solution,
4.5.2.4.1.2 Spectrometric determination
Volume of standard solution62 parts of the volume were added to a set of six 100 mL single-scale containers (A5.1.3.6), diluted to the mark with salt and sugar chain (A5.1.2.4), and thoroughly mixed. Table A1
Standard comparison solution
Let: The center is empty.
Standard comparison solution (A5.1,2,6) /
Standard comparison solution The relative concentration in the flow: wwW.bzxz.Net
19342—2003
A5.1.4.1. 2 Optical error determination
Install the arsenic spectrum source (A.5, .3.31) on the spectrometer (A.5.1.3.1), set it to the maximum value, adjust the instrument end according to the manufacturer's instructions, adjust the single light source to 1.7nm. To obtain a significant aldehyde light intensity, adjust the flow rate of the reagent gas (A.5.1.2.1> according to the characteristics of the hydride generator, and adjust the potassium hydride solution (A.5.1.2.3) and the standard comparison screen (A.5.1.4.1.1) to the desired level. The measurement is carried out at the same rate. Send each standard comparison solution (A.5.1.4.1.1) into the hydride generator (A.5.1.3.2) respectively, and repeatedly use the standard furnace to check whether the device has reached the setting. Between each measurement, water should be sucked into the ventilation tube to ensure that the desired level is maintained. A 5.1. 4.1.3 Standard curve
The standard salt () contained in the above standard comparison solution is used as the horizontal axis, and the absorption value of the corresponding solution minus the blank comparison solution is used as the coordinate.
1.5.1.4.2 Test standard
The standard is obtained according to the steps in Chapter 4
A.5.1.4.3 Blank test solution
Take the blank test solution 1 (Figure 2.1.1) as the blank solution. 4.5.1.5 Expression of results
The test sample content is expressed according to the formula (A. 1) Calculation. X-{-×V×F
or
the content of sodium ions in the sample, in milligrams per dry weight (tng/kg); the content of sodium ions in the sample, in milligrams per milliliter (/mL); the content of sodium ions in the blank solution, in grams per liter (mg/mL);-
the volume of the sample, in milliliter)
the weight of the sample, in grams (g)
F-the basis.
A.5.2 Determination of sodium ions - Flame Atomic Absorption Spectrometry ( A.1) In case of dispute over test results, flame atomic absorption spectroscopy (AAS) shall be used as the standard method. In such cases, the method may be used upon agreement between the parties concerned. A.5.2.1 Principle The sample is placed in a block air flame and the absorption edge of the selected spectral line emitted by a hollow cathode lamp or an electrodeless discharge lamp is measured at a wavelength of 228.8 nm. A, 5.2. 2 Reagents and materials A5.2.2.1 Acetylene, commercially available, in cylinders. A.5.2.2.2 Pressurized gas A5.2.2.3 Standard liquid: A 1000 liter volumetric volumetric flask containing 1 g of acetylene shall be prepared as follows: a) Take a standard liquid containing exactly 1 g of acetylene in a 1020 ml volumetric flask, dilute it to the mark with saline (A, 2.1.1), and distribute it with water: a) Take a standard liquid containing exactly 1 g of acetylene in a 1020 ml volumetric flask, dilute it to the mark with saline (A, 2.1.1), and distribute it with water: b) Dissolve the required saline in 1000 liter volumetric flask containing 1 g of acetylene in a 1020 ml volumetric flask with saline (A, 2.1.1), and dissolve it in hydrochloric acid (A.2.1.2), dilute to the mark with isotropic acid, and mix thoroughly. e) Accurately collect 1g of the solution (accurate to 1mg) in 1cc/3ml single-dose volumetric precipitate, dissolve with a minimum amount of concentrated acid (m/s = 0.18g/ml), dilute to 2.173 mark with 7A of acid solution, and mix thoroughly. 10
This standard solution is 1.
A.5.2.2.4 times the standard solution, containing 1mg per liter. This solution should be prepared at the time of use.
G19342—2003
Use a pipette to collect the sample: A.5.2.2.3) 10 in a 1cc/0ml single-dose volumetric flask. Dilute to the dosage with industry vaccine 1 (A.2.1.1) and shake thoroughly. 1m1. This standard box contains 10R-
A 5.2.3 receiver
and the following instruments: A.5.2.3.1 Large average original character collection spectrometer, with a burner for measuring at 223,8rm and 7 far air,
A,5.2.3.2 Variable center detector lamp or light-sensitive lamp. A.5.2.3.3 Burette; 5l ml.
A.5.2.3.4 Single-scale volumetric flask; 0 m.0riL. A.5.2.4 Operation steps
A.5.2.4.1 Preparation of standard curve
A.5.2.4.1.1 Preparation of standard comparison solution
Add the volume of the standard solution (4.5.2.2.4) in the titration head (A.3.2.3.3) to a group of five 10-well solution (A.5.3.2.4), dilute with hydrochloric acid (A.2.1.1) to the ratio, and divide evenly. Table A.2
Standard comparison solution
No. is blank comparison solution,
4.5.2.4.1.2 Spectrometric determination
Volume of standard solutionb) Dissolve in isocyanate and dilute to scale with isocyanate and mix thoroughly. e) Accurately adjust 1g to the nearest mg in 100mL single volumetric elution volume, dissolve with a minimum amount of concentrated acid (m/s = 1.18 g/mL), dilute to scale with 70% acid solution, and mix thoroughly. 10
This standard solution is 1.
A.5.2.2.4 times the standard solution, containing 1 mg per liter. This solution should be prepared at the time of use.
G19342—2003
Use a pipette to remove the sample: A.5.2.2.3) 10 in a 10mL single volumetric flask. Dilute to the concentration with 1 (A.2.1.1) and shake thoroughly. 1m1. This standard box contains 10R-
A 5.2.3 receiver
and the following instruments: A.5.2.3.1 Large average original character collection spectrometer, with a burner for measuring at 223,8rm and 7 far air,
A,5.2.3.2 Variable center detector lamp or light-sensitive lamp. A.5.2.3.3 Burette; 5l ml.
A.5.2.3.4 Single-scale volumetric flask; 0 m.0riL. A.5.2.4 Operation steps
A.5.2.4.1 Preparation of standard curve
A.5.2.4.1.1 Preparation of standard comparison solution
Add the volume of the standard solution (4.5.2.2.4) in the titration head (A.3.2.3.3) to a group of five 10-well solution (A.5.3.2.4), dilute with hydrochloric acid (A.2.1.1) to the ratio, and divide evenly. Table A.2
Standard comparison solution
No. is blank comparison solution,
4.5.2.4.1.2 Spectrometric determination
Volume of standard solutionb) Dissolve in isocyanate and dilute to scale with isocyanate and mix thoroughly. e) Accurately adjust 1g to the nearest mg in 100mL single volumetric elution volume, dissolve with a minimum amount of concentrated acid (m/s = 1.18 g/mL), dilute to scale with 70% acid solution, and mix thoroughly. 10
This standard solution is 1.
A.5.2.2.4 times the standard solution, containing 1 mg per liter. This solution should be prepared at the time of use.
G19342—2003
Use a pipette to remove the sample: A.5.2.2.3) 10 in a 10mL single volumetric flask. Dilute to the concentration with 1 (A.2.1.1) and shake thoroughly. 1m1. This standard box contains 10R-
A 5.2.3 receiver
and the following instruments: A.5.2.3.1 Large average original character collection spectrometer, with a burner for measuring at 223,8rm and 7 far air,
A,5.2.3.2 Variable center detector lamp or light-sensitive lamp. A.5.2.3.3 Burette; 5l ml.
A.5.2.3.4 Single-scale volumetric flask; 0 m.0riL. A.5.2.4 Operation steps
A.5.2.4.1 Preparation of standard curve
A.5.2.4.1.1 Preparation of standard comparison solution
Add the volume of the standard solution (4.5.2.2.4) in the titration head (A.3.2.3.3) to a group of five 10-well solution (A.5.3.2.4), dilute with hydrochloric acid (A.2.1.1) to the ratio, and divide evenly. Table A.2
Standard comparison solution
No. is blank comparison solution,
4.5.2.4.1.2 Spectrometric determination
Volume of standard solutionThe pan is set, the firebox is adjusted until suitable, and a series of measurements are made. The standard chemical ratio Nn (see Table A.2) gives a few full deviations. For each international standard ratio (3..2.4.1.1), the flame is absorbed. In order to show the degree of work, the standard comparison fluid No, = (see Table A.2) is used to verify that the device has reached the specified value. Between each measurement, the part should be absorbed through the gas source, and it is important to keep the internal and external absorption. A. 5., 2. 4. 1. 3 Standard curve
Take the mass () contained in 1m standard comparative fluid as the horizontal coordinate and the corresponding absorption value minus the empty space in the comparative fluid as the vertical coordinate to draw a curve.
A.5.2.4.2 Sample solution
Obtain the adjustment effect according to step 8.4. =
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