产品品牌：

日本gastec

产品型号：

273

类型：

水质在线分析仪

273铬离子检测管 Cr6+的详细介绍

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