AQUADUR® test strips are for the quick and easy determination of water hardness. The convenient dip & read procedure and the clear colour changes from green to red ensure reliable results within seconds.
below 50 ppm CaCO3– very soft water
50 – 120 ppm CaCO3– soft water
120 – 240 ppm CaCO3 – medium hard water
240 – 360 ppm CaCO3 – hard water
above 360 ppm CaCO3– very hard water
Scale gradation 0, 5, 10, 15, 20, 25 °d*