A test strip for rapid and easy determination of phosphate content.
Box contents: 50 measuring strips.
Scale division: 0, 100, 200, 500, 1000, 1500, 2000, 3000, 4000 ppb

Convertion: 1 ppm = 1 mg/l = 1000 ppb = 1000ug/l (mikrogram/l)