Range:0.5, 1, 2, 5, 10, 20

Color Comparison Method:Molybdenum Blue

Reaction Time:6.5min

Quantity(pcs/box):40

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 : Al3+, B3+, Ba2+, Ca2+, Cl-, CN-, Fe2+, I-, K+, Mg2+, Mn2+, Mo6+, Na+, NH4

+, NO3

-,

SO4

2-, Zn2+, Anionic surfactant, Phenol, Residual Chlorine, Formaldehyde

≤ 500 mg/L : Ni2+, NO2

-

≤ 300 mg/L : As3+

≤ 200 mg/L : Cr6+

≤ 100 mg/L : Co2+, Cu2+, F-, Fe3+,

≤ 50 mg/L : PO4

3-

≤ 10 mg/L : Cr3+

The Silica (Low Range) PACKTEST is not suitable for sea water samples.

Oxidative and reducing chemical can interfere with the measurement.