Simply open and add to the cap of your electrode or tester

indicated by a blinking ‘x10’ image

and heavy metals

fruit & vegetable washing

The epoxy body makes this probe perfect for environments where glass or PVC probes would be damaged or broken

HM Digital C-1000 TDS and EC Calibration Solution - 1000 ppm NaCl 3 oz water filter replacement parts Simply open and add toFor optimal performance, re calibrate your meters periodically or if testing TDS or conductivity levels in wide or different ranges. FEATURES: NaCl calibration solution, 1000 ppm Comes in lightweight HDPE plastic bottles Sealed with a coated foam liner