eDAQ now has at least five research organisations using our C4D products to measure the conductivity of ice cores. Basically, researchers collect a tube of ice from a glacier for example, put it on a heating plate, and record the conductivity of the melt water using the C4D. The C4D technique is very good at recording the very low conductivity of the almost pure water. There is more information at the application note. The C4D can be used with other types of low-conductivity waters.