NEWS CENTER
ZHAOBO
15
2022
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11
Standard introduction of chemical reagents
The author：
Domestic standard:
1. National standard: The Ministry of Chemical Industry proposed, the National Bureau of Standards approval and release, its code name is "GB", its serial number plus the time number, the middle is separated by horizontal lines, are used in Arabic numbers. For example, GB2299-80 high purity boric acid, said the national standard 2299, issued in 1980.
2. Ministerial standards: formulated, approved and issued by the Ministry of Chemical Industry and submitted to the National Bureau of Standards for the record. The code is "HG" or "HGB".
3. Enterprise standards
Foreign standard:
The foreign reagent standards which have great influence on the chemical reagent industry in our country include:
1. Merck Standard: The first company in the world to develop and publish reagent standards.
2. Rajin Standard: The full name is Chemical Reagents with test and Determination Methods and their Standards, which is a very famous scholar standard in the world at present.
3. ACS Specification: Chemical Reagents - American Chemical Society Specification, compiled by the Analytical Committee of the American Chemical Society.
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Address: XEDA Sci-Tech Park,Xiqing Economic-Technological Development Area,Tianjin,China.
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