Website Help System

CofA and CofO

Tips to enter the lot number when requesting a C of A or C of O

Sigma

  • More important for C of O: enter a "0" if only two numbers are in front of the letter e.g. 62K1064 – you will only find the C of O if you enter 062K1064.

Aldrich

  • If you find a lot number such as TO09019TO - enter the lot number 09019TO without the first two letters.
  • If you find a lot number with a filling-code such as 05427ES–021 - enter the lot number 05427ES without the filling-code -021.
  • If you find a lot number with a filling-code such as STBB0728K9 - enter the lot number STBB0728 without the filling-code K9.

C of A not Found
In some cases, a C of A may not be available on-line. If your search was unable to find the C of A you are looking for, you will be presented with a C of A Request form. In many cases a C of A can be faxed to you upon submission of this form.

C of O not Found
Not all products will have a C of O. If you feel a C of O should be available, please contact Technical Services to request the C of O.