With the Density control kit you can easily check the freezing point at site yourself. This helps to ensure you have a sufficient freezing point of the CRANE Temper fluid. Avoid diluting with water which change the freezing point but also the corrosion inhibitor level. Fill up the measuring cylinder with fluid, make sure the temperature is +20°C and then use the aerometer to get the density of the fluid and thereby you will receive the freezing point according to the table received from KRAHN Specialty Fluids.