Recommended level: max. 0.25 mg/l NH₄.
For approx. 50 measurements with glass cuvettes.
For fresh water and salt water. Range of values: < 0.05; 0.1; 0.2; 0.4; 0.6; 1; 1.5; 3; 5 mg/l.
Comes with a table for the resulting ammonia content.
Laboratory comparator system for compensating the intrinsic colour of water.
Includes a syringe for simple measurement of the amount of water.