Water hardness test paper 50 sheets 5149 1 roll (50 sheets)

You can easily check the water hardness. The color can be measured by immersing the sample in it and checking the color change after 15 seconds. It can also be used to check whether calcium or magnesium has been removed. Measurement range and scale (ppm): 0-25-50-120-250-425 Quantity: 1 bottle (50 sheets) Measurement time: 15 seconds Color sample displayed on container