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Phosphate Test

photometric, 0.0025-5.00 mg/L (PO4-P), 0.0077-15.3 mg/L (PO43-), 0.0057-11.46 mg/L (P2O5), Spectroquant®

Quality Level

product line


specific analyte(s)


measuring range

0.0025-5.00 mg/L (PO4-P)
0.0057-11.46 mg/L (P2O5)
0.0077-15.3 mg/L (PO43-)


photometry: suitable


for use with Spectroquant® Move 100
for use with Spectroquant® Nova 60 A
for use with Spectroquant® Prove 100
for use with Spectroquant® Prove 300
for use with Spectroquant® Prove 600

detection method


storage temp.


General description

The method is analogous to EPA 365.2+3, APHA 4500-P E, and DIN EN ISO 6878.

The Spectroquant Phosphate Reagent Test allows the accurate quantification of phosphate. Elevated levels of phosphate might lead to eutrophication of water bodies, which is a risk to the environment. Therefore, the concentration of phosphate in drinking water and wastewater is regulated in many countries.

Further applications are the determination of phosphate in foods & beverages (e.g. beer) and in environmental and agricultural samples (e.g. soil).

The Spectroquant Reagent Test Kits contain highly stable, ready-to-use reagent mixtures to perform the analysis according to the procedure described in the accompanying instruction leaflet.

All our Cell and Reagent Test Kits are equipped with the unique Live ID which allows seamless method recognition and contains essential information such as lot number, expiry date, and automatic calibration updates.
(o-phosphate) Method: photometric, PMB 0.0025 - 5.00 mg/l PO₄-P 0.0077 - 15.3 mg/l PO₄ 0.0057 - 11.46 mg/l P₂O₅ Spectroquant®

Legal Information

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



Signal Word


Hazard Statements

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Storage Class Code

8A - Combustible, corrosive hazardous materials




Phosphate in Groundwater and Surface Water: A Rapid and Reliable Determination Method using the Photometric Spectroquant® Test

The analysis of low concentrations of PO4-P in natural, uncontaminated waters is often challenging. The Spectroquant® photometric test provides an easy-to-use and sensitive method for quantification with results comparable to DIN EN ISO 6878.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service