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Range:Phosphorate(

PO4 (인산염) 0.05, 0.1, 0.2, 0.5, 1, 2 mg/l

PO4-P (인산성인) : 0.02, 0.05, 0.1, 0.2, 0.5, 1 mg/l

Method:4-Aminoantipyrine Color Comparison Method with Enzyme

Reaction Time:5min

Quantity(pcs/box):40

The influences of coexisting substances

Standard colors were determined from standard solutions. However, coexisting ions can modify

reaction color. The list below reports ion concentrations under which ones interferences are

insignificant:

≤ 1000 mg/L : Ba2+, Ca2+, Cl-, F-, I-, K+, Na+, NH4+, NO2-, NO3-

≤ 500 mg/L : B3+, Phenol

≤ 200 mg/L : Zn2+

≤ 50 mg/L : Cu2+, Mg2+, Ni2+, SO42-

≤ 10 mg/L : Al3+, Cr3+, Cr6+, Mn2+

≤ 5 mg/L : Fe3+

≤ 1 mg/L : CNsub-

ppm level : Fe2+, Residual Chlorine

 

The Phosphate (low range) PACK TEST is suitable for sea water samples with a reaction time

extended to 15 - 20 minutes.

Oxidative substances as residual chlorine or hydrogen peroxide can cause a colouring or intensify

the color development. For example, 1 mg/L of residual chlorine causes the equivalent color

development of 0.15 mg/L of phosphate.

Reductive substances can reduce the color development.