The Sulphate MINIKIT is a Turbidity Based test kit for the determination of Sulphate levels between 40 and 200 mg/l.The Turbidity method uses a calibrated two section tube and tablet reagents.A tablet is added to the water in the tube to make a turbid solution.A black dot on the base of the tube is lowered until it is no longer visible, at which point the result can be measured using the scale on the tube.