SIPAN 32 ANALYZER TWO-WIRE SYSTEM FOR CONDUCTIVITY MEASUREMENT; MEASURING PROCEDURE: TWO-ELECTRODE PROCEDURE (2EL), MICROPROCESSOR-CONTROLLED, MEMBRANE KEYBOARD WITH LCD, MENU-BASED OPERATION, LOGBOOK, MANUAL ON CD (5 LANGUAGES), CONCENTRATION DISPLAY, TEMPERATURE COMPENSATION, DIAGNOSTIC SOFTWARE, POWER SUPPLY: DC 24 V, IN FIELD HOUSING