Chromium(VI) (Cr+6) Speciation Standard at 1,000 µg/mL in H2O. 50 mL. 12 months expiry date. Certificate of Analysis includes lot-specific chromatogram. Traceable to NIST SRM 3112 for total chromium concentration and additionally tested by IC against a second source standard for the speciated form. Can be used as stock solution for EPA Method 7196A.
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