"Phosphate test • Recommended level: max. 1.0 mg/l in freshwater. • Highly sensitive test for measurements with laboratory accuracy. • Indicates the phosphate content of the water, responsible together with nitrate lebel for the undesirable growth of algae. • Measurement range begins as low as 0.05 mg/l. • For approx. 50 measurements. • Includes glass cuvettes, comparator system, syringe and colour chart. • For fresh- and saltwater."