Combo ? pH/EC/TDS/HI 98129 Waterproof Tester The new Combo waterproof tester offers high accuracy pH, EC/ TDS and temperature measurements in oC or oF all in a single tester! pH and EC/TDS readings are automatically compensated for the effects of temperature (ATC).
Our price: $169.23
Hanna Instruments ? HI19803 Checker? 1 pH Tester The Checker?1 provides growers with fast and accurate pH readings. The Checker?1 is easy to calibrate, uses a replaceable pH electrode and works for 3000 hours before you have to change the batteries! Checker #1 pH Tes...
Our price: $38.25
