Performance Measuring Range 0.5 to 50 mg/L Sampling Time 2 minutes Detecting Limit 0.4 mg/L Colour Change White → Yellow Reaction Principle Cr6+ + Pb（CH3COO）2 → PbCrO4 Shelf Life 3 Years Corrections for temperature & humidity Water temperature correction is necessary Store the tubes at cool and dark place. Possible coexisting substances and their interferences （NOTE）

Chromium （VI） Ion             NO.273

Cr⁶⁺

Performance
Measuring Range			0.5 to 50 mg/L
Sampling Time			2 minutes
Detecting Limit			0.4 mg/L
Colour Change			White → Yellow
Reaction Principle			Cr6+ + Pb（CH3COO）2 → PbCrO4
Shelf Life			3 Years
Corrections for temperature & humidity			Water temperature correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences （NOTE）
Substance	Concentration	Interference	Change colour by itself to
Cl-	20 mg/L	+	No
CH3COO-	20 mg/L	+	No
NO3-	30 mg/L	+	No
S2-	0.5  mg/L	Unclear	Brown （0.5 mg/L ）
SO42-	10 mg/L	+	No
PO43-	5 mg/L	+	No