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General Spectroscopy - Starting materials for QCP-NUT-2

 
I have a couple of questions about the QCP-NUT-2 standard. What compound or compounds are used in this standard? I’m particularly interested in the TKN portion of the product. Is it possible to have custom concentrations for this standard?
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The nitrogen component of the standard is sourced from glycine, and the phosphorus is provided by a glycerol 2-phosphate sodium salt. It is possible to have custom concentrations certified for this standard, and the simplest way to achieve that is to change the prescribed dilution factor to meet the required concentrations and provide custom paperwork documenting that change. A second option for meeting custom concentration requirements would be to create new lots of the product and assay them to determine the certified concentrations, which would require more time to produce and increase the cost of the product.

Posted: 09/04/18 21:34:15

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