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Question/Answer

What is the holding time for these standards? How long are they good after purchase?

The packaged standard does not have an expiration date on it. We send these standards as dry particles that are suspended in solution in the lab. Once put in solution they have a similar expiration date as a TSS sample, 7 days.

Is an updated MSDS for this product available? The one I have expires on Jan 17, 2014. The link above did not work.

The paperwork that comes with the standard is a combination certificate of analysis and MSDS. The expiration date listed is for the product that came with that paperwork. It does not apply to the MSDS itself.

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