Hanna HI1285-9 GroLine Inline Multiparameter Probe - pH EC TDS Temperature Sensor 1-40101-2 The battery icon will blink

The battery icon will blink to let you know it is time to change the battery so you never miss a measurement

Potassium Carbonate – Concentrated

ZeroWater® 5-stage water filters keep your water pure-tasting and ready for everyday use

Filters Heavy Metals & TDS: Reduces lead

Hanna HI1285-9 GroLine Inline Multiparameter Probe - pH EC TDS Temperature Sensor 1-40101-2 The battery icon will blinkHanna HI1285 9 GroLine Inline Multiparameter Probe pH, EC, TDS & Temperature Sensor The Hanna HI1285 9 GroLine Inline Multiparameter Probe measures pH, EC TDS, and temperature in one convenient, rugged probe designed specifically for continuous monitoring in hydroponic nutrient solutions. This specialized inline probe is engineered for use with the HI981421 GroLine Monitor to provide around the clock monitoring of critical water quality parameters in