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Apera Instruments Value Series EC20 Conductivity (EC) Pocket Tester Kit, ±1% F.S Accuracy in 0 to 20 mS/cm, BPB Sensor
16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox
Apera Instruments 3M KCL Storage Soaking Solution (8 oz.) for pH and ORP Electrodes
Apera InstrumentsSX625 Replacement pH Probe for SX620 pH Pen Tester
Apera Instruments AI3133 LabSen 333 Professional 3-in-1 pH/Temp. Electrode for Wastewater Treatment, BNC/RCA Connector, POM
Apera Instruments PH60F-DE Replacement Flat pH Probe for ZenTet pH rs
Apera Instruments AI1315 301Pt-S ORP Combination Electrode, 8pin Connector, Compatible with Apera 400/400S Series Meters, Polycarbonate
GluckluzDigital PH Meter 7-in-1 TDS/EC/Salt/S G/Temps/ORP Water Quality Tester Waterproof Pen Tester with LCD Display & 0.01 High Accuracy & ATC System & 3 PH Buffer Powder for Pool Aquarium
Apera InstrumentsLLC-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 InstrumentsAI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy
Apera Instruments, LLC AI4725 WS100 Fluoride/pH Portable Meter Kit with 3-in-1 Fluoride Probe
Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each
APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy
Apera Instruments AI2810 602 Flexible Electrode Holder, Plastic
Apera InstrumentsAI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display
Apera Instruments, LLC-AI314 Premium Series EC60 Waterproof Conductivity Pocket Tester Kit, ±1% F.S Accuracy, Easy Switch of EC/TDS/Salinity, Replaceable Probe
Apera Instruments AI104G GroStar Series GS4 pH/EC/500ppm/700ppm Combo 5-in-1 Pen Tester Kit with Replaceable Double-Junction pH/EC Probe for Hydroponics Water Quality Testing, Gen II
Apera Instruments AI1304 2301-C Conductivity Electrode (K=1), Range: 0.5 µS/cm to 200 mS/cm, BNC Connector, Polycarbonate
Apera Instruments TN480 Portable Turbidity Meter with GLP Data Logger, ISO 7027 Compliant
APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy
Apera Instruments, LLC-AI1109 8oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 4oz 3M KCL Storage Solution for pH/ORP Electrodes
Apera Instruments AI1303 301Pt-C ORP Combination Electrode, BNC Connector, Polycarbonate
Digital Hydrogen Meter, Water Quality Tester Pen with Data Hold Function, Reliable Accurate PH ORP H2 Temp Meter with ATC LED Displays, Measures PH in Solutions for Pool Lab
Apera InstrumentsPremium Line ORP60 Pocket ORP Tester Kit, Replaceable Probe, 1 mV/±0.2% F.S Accuracy, ±1000 mV Range
APERA INSTRUMENTS 201-C Combination pH Electrode, BNC Connector, Polycarbonate-Body (AI1301)
Apera InstrumentsLLC-AI1201 Apera Instruments,LLC PH60-E Replacement Probe for PH60 Pocket pH Tester
Apera Instruments 201T-F All-in-one pH Electrode, ATC, BNC/RCA Connector, Polycarbonate Body AI1302
Apera Instruments, LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light
Apera Instruments AI3711 PH60-Z Bluetooth Smart pH Tester Powered by ZenTest Mobile App with Cloud-Based Datalogger