Apera Instruments, LLC-AI501 PH700 Benchtop Lab Ph Meter, 0.01 Ph Accuracy, 1-3 Points Auto Calibration, 3-In-1 Ph/Temp. Electrode

APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester Kit

APERA INSTRUMENTS AI209 Value Series PH20 Waterproof Ph Tester Kit, ±0.1 Ph Accuracy

Apera Instruments AI311 Premium Series PH60 Waterproof Ph Pocket Tester Kit, Replaceable Probe, ±0.01 Ph Accuracy, Lcd Display

Apera Instruments 201T-F All-In-One Ph Electrode, ATC, BNC/RCA Connector, Polycarbonate Body AI1302, Digital

Apera Instruments WS200 Fluoride/Ph/Conductivity 7-In-1 Portable Meter Kit

Apera Instruments PH60-HF Handheld Ph Meter Tester Kit With Labsen 835 ATC Ph Electrode For Lab-Grade Ph Measurement In Liquids Containing Strong Acid

Apera Instruments SX716 Portable Lab Dissolved Oxygen DO Meter, Waterproof, Automatic Temperature, Salinity Compensation And Calibration Silver AI461

Apera Instruments AI502 EC700 Benchtop Lab Conductivity/Temperature Meter, Plastic, 1% F.S Accuracy, 0-200.0 Ms/Cm Range, 1-4 Points Auto Calibration

Apera Instruments Labsen 241-6 Professional Combination Ph Electrode For Small Samples (>0.2 Ml), BNC Connector, Lead-Free Glass

APERA INSTRUMENTS AI209-T Value Series PH20 Ph Tester Combo Kit, Including The Maintenance Set, And A Calpod Solution Holder For Easy Calibration

Apera Instruments AI102G Grostar Series GS2 Soil Ph Pen Tester Kit For Direct Soil Test And Nutrient Solutions Test With Replaceable Swiss Spear Ph