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HI 98107 pH Electronic Paper with Renewable Junction

HI 98301 EC and TDS Testers with Graphite Electrodes

HI 98302 EC and TDS Testers with Graphite Electrodes

HI 98303 EC and TDS Testers with Graphite Electrodes

Portable Meters

HI 8314 Analog pH Meter with ORP and Temperature Readout

HI 8424 Microprocessor pH Meter Waterproof with Automatic Calibration & Temperature Compensation

HI 8733 Multi-range Conductivity Meter with 4-ring Potentiometric Probe

HI 9146-04 Dissolved Oxygen Meter with Extended Range

Benchtop Meters

pH 211 Microprocessor pH Meter with Large LCD		pH 209 Analog pH/mV Bench Meter An Easy to Use, Economical Meter		pH 213 Bench Meterwith 0.001 pH resolution and Stability Indicator		EC 215 Conductivity Meter for Laboratory Use
HI 2300 Multi-ranging EC, TDS, NaCl, Temperature Meter with 4-ring Potentiometric Conductivity Probewith PlatinumSensors		HI 2400 Dissolved Oxygen Meter for Laboratories

Electrodes & Probes

HI 1230B Combination pH electrode		HI 1217B pH electrode with temperature sensor and amplifier		HI 1131B Refillable, combination pH electrode		HI 1332B pH electrode
HI 76302W 4-ring Potentiometric Conductivity Probe		HI 76310 4-ring Potentiometric Conductivity Probe		HI 76407/4F DO Probe with Protective Sheath		HI 76407/2 Standard DO Probe
HI 76303W 4-ring Potentiometric Conductivity Probe		HI 76407A/P PTFE Membranes 5 ready-to-use replacement membranes