Range:0.2, 0.5, 1, 2, 5, 10mg/l

Method:4-Aminoantipyrine Color Comparison Method with Enzyme

Reaction Time:1min

Quantity(pcs/box):40

Interferences

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

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

are insignificant:

≤ 1000mg/L : B3+, Ba2+, Cd2+, Cl-, F-, I-, K+, Mg2+, Na+, NH4

+, NO2

-, NO3

-, SO4

2-, Zn2+

≤ 500mg/L : Ca2+, SCN- , Anionic surfactant

≤ 200mg/L : As3+, Mo6+, PO4

3-

≤ 50mg/L : Ag+, Fe3+, Ni2+, Residual Chlorine

≤ 20mg/L : Co2+, Cr3+, Cu2+, Mn2+

≤ 10mg/L : Cr6+, Pb2+

≤ 5mg/L : CN-

≤ 1mg/L : Al3+, Fe2+

The Phenol PACKTEST is suitable for sea water samples.

Oxidative and reductive chemical, aromatic amines, petroleum, tar can interfere with the

measurement.