Analysis Note

function control: conformsAssay - standard 1: 8 - 12 mg/l - standard 2: 45 - 55 mg/l - standard 3: 90 - 110 mg/l

General description

The Reflectoquant™ Phosphate test includes test strips and all necessary additional reagents. It is suitable for determining orthophosphate in wastewater, soil samples, fertilizers and food. In sulfuric solution orthophosphate ions (PO43-) react with molybdate ions to form molybdophosphoric acid. This is reduced to phosphomolybdenum blue (PMB) that is determined reflectometrically on the RQflex™. For pre-testing a sample in an economic and quick way to estimate the phosphate concentration and a possible dilution factor prior to using this quantitative method we recommend our semi-quantitative MQuant™ test strips for phosphate. Further quantitative determination methods can be found with our Spectroquant™ tests.

Method: reflectometric with test strips and reagent 5 - 120 mg/l PO₄³_- Reflectoquant^®

Legal Information

RQFLEX is a registered trademark of Merck KGaA, Darmstadt, Germany

REFLECTOQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany