Some Water-i.d.® Mini Kits are based on the tablet counting method, in which tablets are added to the water until the colour changes in a defined way. The amount of tablets added is entered into a formula to determine the measured value. The innovative Water-i.d.® tablet push-through blisters simplify the procedure. In the turbidity method, the water sample becomes turbid after the reagent is added. The intensity of the turbidity determines the value. In the yes/no test method, a distinction is made between 2 different colours. Depending on which colour develops, the parameter is present in the sample or not. Both the titration and turbidity methods and the yes/no test are simple and proven measuring methods for determining water values.