What is the usual expiration time from purchase?

COD vials have a 5 year from manufacture date of expiration.

What is the acceptable range of the B1030 COD standard?

Most labs use ±5%. The exact acceptance criteria should be determined by your QA practices.

where can i get a cert. of analysis for #B1030 lot# 84929 ??

You can find our Certificates of Analysis on our website under the Technical tab or at http://www.envexp.com/coa.

what is the shelf life of this standard?

This standard is good for one year from the date of manufacture.

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