Robust and waterproof for field application Digital conductivity measurement from pure water to highly concentrated solutions Automatic transfer of cell constant and temperature compensation The Cond 3310 IDS is a cost effective conductivity meter for IDS conductivity cells. It is easy to operate by a well-defined menu. Together with the LR 925/01 it covers pure water applications; the TetraCon® 925 provides a wide measuring range up to highest conductivity. IDS conductivity cells store their calibration data as well as cell constant and sensor information.