Performance Measuring Range 1 to 20 mg/L Sampling Time 5 minutes Detecting Limit 0.5 mg/L Colour Change White → Orange Reaction Principle Cu2+ + Reduction Agent → Cu+ + BathocuprimCu+ → Complex compound Shelf Life 2 Years Corrections for temperature & humidity Unnecessary Store the tubes at cool and dark place. Possible coexisting substances and their interferences （NOTE）

Copper Ion                          NO.284

Cu

Performance
Measuring Range			1 to 20 mg/L
Sampling Time			5 minutes
Detecting Limit			0.5 mg/L
Colour Change			White → Orange
Reaction Principle			Cu2+ + Reduction Agent → Cu+ + Bathocuprim Cu+ → Complex compound
Shelf Life			2 Years
Corrections for temperature & humidity			Unnecessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences （NOTE）
Substance	Concentration	Interference	Change colour by itself to
Zn	5 mg/L	+	No （100mg/L）
Al	50 mg/L	+	No （100mg/L）
Cr6+	100 mg/L	No	Pale yellow （100 mg/L）
Co	100 mg/L	No	No （100mg/L）
CN-	0.2 mg/L	-	No （100mg/L）
Fe	100 mg/L	No	No （100mg/L）
Ni	70 mg/L	+	No （100mg/L）
Mn	30 mg/L	+	No （100mg/L）