|Range||MDL||Method||Kit Catalog No.||Refill Catalog No.|
|0-1 & 1-10 ppm||0.05 ppm||Diphenylcarbazide||K-2810||R-2810|
|Range||Method||Kit Catalog No.|
Hexavalent chromium salts are used in numerous industrial processes. They are also used extensively as corrosion inhibitors in open and closed cooling water systems
The Diphenylcarbazide Method
References: APHA Standard Methods, 22nded., Method 3500-Cr B- 2009. ASTM D 1687-02, Chromium in Water, Test Method A.
With the chromate test method, hexavalent chromium reacts with diphenylcarbazide under acid conditions to form a red-violet color. Results are expressed as ppm (mg/L) CrO4.