Chromium +6 Speciation Standard at 1,000 µg/mL in H2O.

The certificate of analysis includes a lot-specific chromatogram.

This standard is traceable to NIST SRM 3112 for total chromium and a second source standard for the speciated form. Can be used as stock solutions for EPA Method 7196A.

ISO 9001:2015 certified, ISO/IEC 17025:2017 and ISO 17034:2016 accredited.

12 month expiration date.