This standard specifies the sampling, storage and transportation of electronic grade water and the format of the test report. This standard applies to electronic grade water of grades I to IV. GB/T 11446.3-1997 General Rules for Testing Methods of Electronic Grade Water GB/T11446.3-1997 Standard download decompression password: www.bzxz.net

GB/T 11446.3-11446.10-1997 GB/T11446.3~11446.10-1997 are respectively GB11446.3-89 "General Rules for Testing Methods of Electronic Grade Water", GB11446.4-89 "Test Methods for Resistivity of Electronic Grade Water", GB11446.5-89 "Atomic Absorption Spectrophotometric Test Methods for Trace Metals in Electronic Grade Water", GB11446.6-89 "Spectrophotometric Test Methods for Trace Silica in Electronic Grade Water", GB11446.7-89 "Ion Chromatographic Test Methods for Trace Ions in Electronic Grade Water", GB11446.8-89 "Test Methods for Total Organic Carbon in Electronic Grade Water", GB11446.9: 89 Instrumental Test Method for Particles in Electronic Grade Water". GB11446.10-89 "Filter Culture Test Method for Total Bacteria in Electronic Grade Water" has been revised.
Since GB/T11446.1 has added technical indicators for the leaving factory of metal nickel, nitrate ions, phosphate ions, and sulfur rubber ions, this standard has added the test methods for the determination of metal nickel by atomic absorption spectrophotometry and the determination of nitrate, phosphate, and sulfate by ion chromatography. The test method for bacteria only uses the filter culture method, and the method for measuring total organic carbon has also been completely rewritten. The general principles of test methods, the method for measuring resistivity, and the method for determining total silicon have all been revised and rewritten. This standard is implemented from the date of implementation, and G13 11446.3~11446.1089.
This standard is proposed by the Ministry of Electronics Industry of the People's Republic of China. This standard is submitted by the Standardization Institute of the Ministry of Electronics Industry. The drafting units of this standard are: Institute of Semiconductors, Chinese Academy of Sciences, and Standardization Institute of the Ministry of Electronics Industry. The main drafters of this standard are: Wen Ruimei, Li Xiaoying, Wang Zaizhong, Xu Xuemin, You Pan, Liu Renzhong, and Xu Xiuxin. ..comScope
National Standard of the People's Republic of China
Generic rules for test methods of electronic grade water
Generic rules for test methods of electronic grade water This standard specifies the sampling, storage and transportation of electronic grade water and the format of test reports. This standard is applicable to electronic grade water of grade 1~N.
2 Reference standards
GB/T 11446. 3-1997
British Standard GB11446.389
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. Parties using this standard should explore the possibility of using the latest version of the following standards. GB/『 11446.1—1997 Electrolyte Grade Water 3 Definitions
3.1 Sampling
A representative part of the tested substance is collected. 3.2 In-line monitoring In-line monitoring Select appropriate sampling points in the production process of high-purity water to directly measure water quality indicators with instruments. Resistivity, the concentration of certain ions, the number of particles, etc. can all be monitored by in-line monitoring. 3.3 Concentration
The amount of a substance contained in a unit sample. When describing the concentration of the substance, the dimension must be indicated. 3.4 Sensitivity sensitivity
The ratio of the change in the content of the measured element in the sample to the change in the measured response signal. The higher the sensitivity, the greater the slope of the working curve. 3.5 mg/L milligram per litre The number of milligrams of impurities in each liter of solution. 3.6 microgram per litre (μg/L) microgram per litre The number of micrograms of impurities in each liter of paint solution. 3.7 nanogram per litre (ng/L) nanogram per litre The number of nanograms of impurities in each liter of solution. 3.8 blank value blank value
The additional value of the measurement result introduced by water, reagents, blood, equipment, environment and the operator himself. In trace analysis, the blank value must be controlled to the minimum.
3.9 blank test blank test
A test conducted under exactly the same conditions and steps as the analysis of the sample without adding the sample or the measured element. 3.10 Standard sample standardsatnple A reference material whose composition and properties are confirmed by a recognized standardization organization or other authoritative organization. Approved by the State Bureau of Technical Supervision on September 1, 1997 and implemented on September 1, 1998. 3.11 Reception test GB/T11446.3-1997 A test method for checking the separation effect in the analytical technique, that is, to separate a known amount of impurities added to the sample, then determine the amount of the impurities separated, and compare the two to check the separation effect. 4 Sampling 4.1 Representative sampling points must be selected for the collection of village-level water samples 4.2 Hard glass bottles or plastic containers must be used for water containers (sampling bottles). When using d-type to measure silicon particles, metals, and anions, plastic containers such as polyethylene must be used. Sampling bottles used for analyzing total organic carbon and bacteria must use glass bottles with ground mouths. 4.3 Before sampling, the container for water samples should be cleaned with detergent in advance. Then soak it in hydrochloric acid (1+1) or 10% nitric acid for 48 hours (except for containers used for anion analysis): then rinse it with E-grade electronic grade water and fill it with electronic grade water. Drain the water before sampling and rinse it repeatedly with the test water before sampling. The sampling volume is about 3/5~~4/5 of the container volume. After sampling, the bottle stopper should be quickly covered. The bacterial sampling bottle must be sterilized at high temperature.
4.4 Before collecting water samples The water system must be run for a period of time (more than 30 minutes) to allow the water in each device and system to reach equilibrium before sampling. All valves should be opened before sampling to drain all the water in the dead corners, and then sampling should be performed after sufficient flushing with fresh water. 4.5 The number of water samples collected should meet the needs of testing and re-testing. The water sample for full analysis shall not be less than 3 [.; the water sample for single analysis shall not be less than 0.3L.
4.6 The sampling personnel shall wear medical gloves when sampling and shall not use their hands during operation The contact part between the water sample and the plug and the water sample. 4. After collecting the water sample, please label it and indicate: the name of the water sample, the name of the sampler, the sampling location, time, temperature and other conditions (such as climate conditions).
5 Storage and transportation
After the water sample is collected, it should be tested in time to shorten the storage and transportation time as much as possible. 5.1 In order to reduce the change of its properties during storage caused by the instability of the water sample, the stored water sample should be kept at about 5℃ and should not be exposed to direct sunlight. ||tt ||5.2 Water samples should be protected from sunlight and freezing during transportation, and the sample container should not be inverted. 5.3 For water that has been stored or transported and tested, the storage time and temperature conditions should be noted in the report. 6 Test report
The analysis results of various indicators of electronic grade water samples should be reported according to the requirements of the following table. Sample unit provided:
Sample deposit and transportation conditions:
Resistivity (25)
Mn·cn
All silicon, maximum value
>1 mNumber of particles, maximum value
pieces/ml
Number of bacteria, maximum value
pieces/mL
Pb, maximum value
Zinc, maximum value
, maximum value
Pb, maximum valuebzxz.net
Potassium, maximum value
Oxygen, maximum value
Nitrate, maximum value
Phytate, maximum value
Vegetate, maximum value
Total organic carbon, maximum value
GB/T 11446.3-1997
Electronic grade water water sample analysis report
Sampling date:
Sample taker:
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