Phosphate, total, TNT, 1,0 - 100 mg/L PO4

Description

Cuvette tests TNT 2767245 for the determination of Phosphate, total, from Hach.

Аpplication: For water and wastewater.

Cuvette test (Ø 16 mm) completely equipped with all reagents, optimised for reliable measuring results and easy handling. Sealed ampoules of 16 mm contain everything you need for mixing and measuring. The package contains all the necessary reagents and ampoules.

Special remarks: 16 mm TNT products can be evaluated on DR900 only.

Description: Phosphate, total,TNT Reagent set, HR.

Summary of method: Phosphates present in organic and condensed inorganic forms (meta-, pyro- or other polyphosphates) must be converted to reactive orthophosphate before analysis. Pretreatment of the sample with acid and heat provides the conditions for hydrolysis of the condensed inorganic forms. Organic phosphates are converted to orthophosphates by heating with acid and persulfate. Orthophosphate reacts with molybdate in an acid medium to produce a mixed phosphate/molybdate complex. In the presence of vanadium, yellow molybdovanadophosphoric acid forms. The intensity of the yellow color is proportional to the phosphate concentration. Test results are measured at 420 nm.