Range:0.05, 0.1, 0.3, 0.5, 1 , 2mg/l

Method:Reduction and Bathophenanthroline

Reaction Time:2min

Quantity(pcs/box):50

Interferences

Standard colors were determined from standard solutions. However, coexisting substances will cause

inaccurate results. The list below reports ion concentrations under which ones interferences are

insignificant:

< 1000 mg/L : B3+, Ba2+, Ca2+, Cl-, F-, I-, K+, Mg2+, Mn2+, Na+, NH4

+, NO3

-, SO4

2-

< 500 mg/L : Phenol

< 100 mg/L : NO2

-

< 50 mg/L : Cr6+, Mo6+, Ni2+,

< 10 mg/L : PO4

3-, Zn2+

< 3 mg/L : Cr3+

< 2 mg/L : Co2+, Residual chlorine

< 1 mg/L : CNsub-

ppm level: Al3+, Cu2+

The Iron (Low range) PACKTEST is not suitable for sea water samples.

Oxidizing chemical can interfer with the reaction