NaCl calibration solution 1000 ppm comes in lightweight HDPE plastic bottles. Sealed with a coated foam liner.

FEATURES Measures total dissolved solids (TDS) and temperature Automatic Temperature Compensation (ATC) Water-resistant housing Measurement Range: 0-5000 ppm Digital Calibration (push...

HydroMaster Digital testers make monitoring water easier than ever by reading the levels that matter most and providing accurate readings that you can depend on. Continuous pH/EC/TDS/Temp monitor...

The COM-80 is an economically priced, reliable EC/TDS meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking...

The HM Digital HydroMaster HM100 conveys 3 critical parameters for successful gardening. The HM100 is a versatile continuous monitor that displays pH, EC (µS/mS), TDS (.5 (NaCl) / .7 (442)) &...

For use with HM Digital's PH-200 and PH-80 (as well as other brands of pH meters). Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap with the...

The PH-80 is an economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and...

HM-500 Replacement pH probe2 Meter / 80 inch cable lengthIncludes pH storage solution, 6-month warranty

This spare sensor is for HM Digital EC/TDS/Temp Combo Meter model COM-100. Features platinum TDS/EC sensor and thermister.

The HM Digital Hydromaster EC/TDS Probe is a replacement part for the HydroMaster HM-500.

Ideal for commercial use, the TDS-3 includes a carrying case with belt clip. It is highly efficent and accurate due to its advanced microprocessor technology. It features a measurement range of...

Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology...

FEATURES Measures pH and temperature Auto-ranging three point calibration with digital fine tuning Includes 4 pH buffer solution in a sponge embedded in a clear cap, so you can see if it's dried up...