Hermetically sealed to maintain freshness

and durable portable design that handles repeated daily testing

Store filter wet between uses

Replaceable pre-tensioned HDPE Membrane

do not tap the membrane directly on the bottom

Hanna HI76309 Conductivity/TDS Temperature Probe - 4-Ring for HI9835 & HI2300 general purpose cleaner Hermetically sealed to maintain freshnessThe HI76309 conductivity and temperature probe features a PVC body with a stainless steel, four ring design. This design offers highly accurate readings over the entire conductivity range. 4 ring interchangeable probe with built in temperature sensor, ATC and 1 m (3. 3') cable, for use with HI 9835 Multiparameter EC TDS C NaCl and the HI 2300 Conductivity, TDS, NaCl and Temperature Meter.