Where can I inquire about the reference substances of the Central Inspection Institute? middle

      

　　Where can I inquire about the reference substances of the China Inspection Institute? For the reference substances of the China Inspection Institute, you can go to the National Standards Network! Enter the reference substance number of the China Inspection Institute (the reference substance of the China Inspection Institute starts with the number YJ-) or the relevant product name in the search box of the National Standards Network to inquire about the relevant information of this reference substance

　　The valid period of reference substances judged by the Central Inspection Institute:The drug standard substances of the Central Inspection Institute generally do not have a valid period like drugs, except for the varieties with a valid period indicated on the instructions. Under the specified storage and use conditions, the Central Inspection Institute will regularly conduct stability checks on the characteristic values. If it is found that it affects the use, it will publish relevant information in a timely manner.

　　The Central Inspection Institute, whether it is EP or USP, will regularly re-label the existing reference substance to monitor the purity change. Usually, the old batch number is out of stock, and the new batch number will be issued. Therefore, after the new batch number is issued, the Central Inspection Institute will not track and monitor the old batch number, nor will it ensure that the purity of the old batch number is the purity written on the reference product manual. Therefore, it is recommended to void the old batch number and use the new batch number. Of course, if you have enough data to prove that the purity of the old batch number has not changed, as long as the experts who come to check approve it, there is no problem.

　　National Standards Network knows that some laboratories have a habit that when new reference substances come out, the old batch number will no longer be used. If no new ones come out, the old ones will be used. Recommended reading:Method for inquiring the batch number of reference substance and the manual of reference substance of the Central Inspection Institute