gross beta

Collapsible for easy storage

Rinse the electrode between calibration points to prevent cross-contamination

Potassium Silicate = < 60%

Wet the sensor by soaking the bottom 2

Hanna Instruments Shockproof Rubber Boot HI710030 - Green Silicone Case for GroLine & HI991000 Meters photometer accessories gross betaProtect your GroLine and portable meters with the Hanna Instruments HI710030 shockproof rubber boot. This premium green silicone protective case is custom molded for the HI9814 GroLine pH EC TDS meter, HI991000 family of portables, and select thermistor based thermometers, providing superior drop protection and enhanced grip for demanding hydroponics, agriculture, and water testing applications. Superior Protection Features: Impact resistant design: