Na₂SO₄ in H₂O

• Diluted standard solutions that are ready-to-use for accurate measurements
• Traceable to SRM from NIST and USP
• Full certificates of analysis with comprehensive quality documentation
• Information on concentration and expanded measurement uncertainty
• Save time and minimize errors

Method used for Uncertainty Measurement (Accuracy in the table below)= Photometry

The concentrations available are designed for use with Spectroquant® test kits, but are equally applicable to standard methods or for use with other manufacturers' relevant test kits.