i have been calibrating temperature since 1969 and the temperature you are telling people to calibrate to is not right it is not 32 F Degrees. in ice and water it is 36 F Degrees. and you need to mix up the water and ice. And it should be calibrated to 36 F degrees it is a more constant temperature there is no way it can be 32 F Degrees en less it is solid ice. i show in my 2 videos on YouTube titled correct calibration with ice. In one of my videos i show the ice solid with no water that's when it is 32 F. not when it has water in between the ice.The 2'ND video shows ice and water 36 F at room temperature. it has to be solid ice to be 32 F i have put the water and ice in the freezer and froze it solid the took it out then it was showing 32 F Degrees when there is ice cubs with water it is 36 F at room temperature not 32 F. A lot of you people are not calibrating it right and are telling people wrong. 36 F for your ice point it is more constant temperature with water and ice in a warm room.