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Testing - pH ORP Meters

pH Buffer Solution
HM Digital pH Buffer Solution Variety Pack
pH200 Replacement Sensor
HM Digital pH-200 Meter Replacement Sensor

TDS Calibration Solution
HM Digital TDS Calibration Solution
Hanna Instruments Combo pH-EC-TDS-Temp Tester - Low R
The Hanna Instruments HI 98129 provides high accuracy pH, EC/TDS and temperature level measurements
Hanna Insturements ORP-Temperature Meter
The HANNA HI 98120 is an advanced function, micro-processor driven ORP tester

Hanna pH and Temperature Meter
The HANNA HI 98127
Waterproof - measure pH levels and temperature
HM Digital AquaPro TDS Tester AP-1
Measure potentially harmful TDS in the range of 0-5000 parts per million (PPM)
HM Digital COM-100 EC, TDS, TEMP Meter
Versatle Meter for Combination Testing of EC, TDS and Temperature

HM Digital DM-1 Dual Inline TDS Monitor
Dual Inline TDS moniter
Great For RO or other Filtering Systems
HM Digital ORP Buffer Solution
HM Digital ORP Buffer Solution and Electrode Testing kit
HM Digital ORP-200 Meter
Great general purpose meter for ORP testing in various applications.

HM Digital pH-200 Meter
Great for testing pH in a variety of applications
HM Digital pH80 Hydrotester
Economical pH Meter from HM Digital
HM Digital QC-1 TDS Quick Check
Push Button In-Line Tester for TDS Sampling

HM Digital TDS-3 Meter
Handheld TDS Meter with Carrying Case
TTDS Range: 0 - 9990 ppm (mg/L)
HM Digital TDS-4 Meter
Handy Pocket Sized TDS Testing Meter
Range: 0 - 9990 ppm (mg/L)
HM Digital TDS-EZ Water Quality Tester
Ideal for all basic TDS water testing applications.
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