Inquiry of standards and reference substances of the Central Inspection Institute

      　　The standard product inquiry of the China Inspection Institute can go to the national standard product network to search and inquire. The specific methods are as follows:
　　First, click to open the National Standards Network www.gbw.org.cn website to search in the search box for the name, or number, CAS standard product you need to find, and click Search

　　2. After searching for relevant product information, the National Standard Products Network will display different product names, sales prices, product numbers, CAS, specifications, etc. Such as searchingcaffeine referenceAs shown in the figure below:

　　3. Click on the caffeine reference substance numbered YJ-171215 to view the batch, purity and part of the instruction manual of the standard product of the Central Inspection Institute.
Remarks: YJ is the abbreviation of drug test,The product that starts with YJ- is the product of the Central Inspection Institute. If you don't understand it very well, it is recommended to read:Central Inspection InstituteInquiry method of reference substance manual