BWT Water Hardness Test Kit (537KA)

Measure the hardness in tap water by adding one drop of the reagent at a time until it changes colour. The hardness is then calculated by counting the number of drops used. One drop equals 10 parts per million of total hardness. Each kit is supplied with enough for multiple tests. Test tube can be simply washed under a tap. Easy to use at home, with no specialist storage conditions required. Simple & Convenient to Use Enough for Multiple Tests Simple & Convenient to Use Enough for Multiple Tests - Manufacturers part number: 537KA