Where can we find the CoA for this product? It doesn\'t appear under the space we expected to find it on your website.

If you do not have the original COA that came with the item you will need to contact the original vendor of this item, NSI solutions. Go to http://www.nsi-es.com/coa.aspx and select QCI-055 as the part number. Find your lot number and you will be able to download a PDF.

Can this standard be used for VSS?

No - this standard only has certified values for TSS, TDS, and TS. We do offer a VSS standard which would be part # F95005, F95005H, or F95005UH.

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