No imageRestmo✓FlowmetersRESTMO Water Flow Meter, High Measure Accuracy, Measure Gallon/Liter Consumption and Flow Rate for Garden Hose Watering, RV Water Tank Filling, Lawn Sprinkler, Irrigation System$26.39View
No imageYINMIK✓Conductivity Meters & AccessoriesTruncheon EC PPM Meter for Hydroponic Nutrient Conductivity Tester Stick for Hydroponics Growing PPM EC Meter Measuring Tool (EC PPM 500/ PPM 700/CF/Temp) for Nutrient Reservoir Aquaponics DWC$47.20View
pH Meters✓pH MetersDigital PH Meter, PH Tester Digital, High Accuracy Water Quality Tester with ATC, 0-14 PH Measurement Range PH Meter for Household Drinking Water, Pool, Hydroponics, Aquarium Water$11.90View
WPKD BLUEIY✓pH MetersWPKD BLUEIY PH Probe,PH0-14 Value Acquisition Sensor,ABS PH Meters Probe with BNC Connector,for Aquariums,Hydroponics,Laboratory$12.00View
YINMIK✓pH MetersYINMIK pH Meter, Digital pH Tester for Water, Professional pH Test Kit, Accurate pH Temp Water Quality Tester for Pool, Spa, Hot Tub, Drinking Water, Wine Beer Home Brewing, Aquarium, Hydroponic$22.43View
flintronic✓pH MetersFlintronic Water Quality Test TDS Meter, +/- 2% Reading Accuracy, TDS/Temp 2 in 1 Water Testers, for Household Drinking Water, Pool, Hydroponics, Aquarium$6.59View
YINMIK✓pH MetersYINMIK Hydroponics pH Meter 4 in 1 pH EC TDS Temp Meter for Hydroponics ppm and EC Water Tester Digital pH PPM Meter for Nutrients Growing Hydroponics Gardening DWC hydroponics System$38.00View
SUNGOOYUE✓pH MetersWater Quality Tester, Water Quality Detection Pen Smart 7 in 1 High Sensitivity Probe PH TDS EC ORP SG Salinity Temperature Meter$112.99View
Uadme✓Liquid Analysis InstrumentationUadme Water Flow Meter, 1" Internal Thread Digital Display High Accuracy, 5-120 L/Min Turbine Flowmeter for Diesel, Gasoline, Urea,Water, Oil$88.99View
Hancaner⏳pH MetersHancaner Salinometer Waterproof Salinity Test Pen 2-in-1 Salinity & Temperature Meter Portable Salinity Meter Salimeter Pen Type Salinograph 0~199.9ppt Range -50~70℃ Temperature Meter$51.99View
BOJACK⏳pH TestingBOJACK 15 Pack of pH Meter Buffer Solution Powder for Precise and Easy PH Calibration, PH Calibration Powder Solution 4.01pH,6.86pH and 9.18pH$21.99View
iplusmile⏳pH Metersiplusmile 3pcs pH Meter Buffer Solution Powder for Precise and Easy for Precise pH Calibration Powder Solution,4.01pH,6.86pH and 9.18pH$25.99View
GAIN EXPRESS⏳ElectrodesReplacement pH Electrode with Calibration Powder, 0-14 pH Highly Accurate Probe with BNC Connector & 200cm Cable for Continuous Liquid Measurement$57.99View
Jeanoko✓Liquid Analysis InstrumentationJeanoko Coral Aquarium Special Aquatic Aquaculture Seawater Hydrometer Concentration Meter Salinity Square Salt Measuring Device for Fish Tank Shape$13.12View
GAIN EXPRESS⏳pH MetersDigital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory$103.99View
TOPWAY⏳pH MetersTOPWAY Digital PH and TDS Meter Combo, 3 in 1 TDS PH Temp Tester Meter, High Accuracy LCD Backlight Digital Water Quality Test Meter for Drinking Water/Aquarium/Swimming Pool and More$24.99View
CQRobot⏳ElectrodesCQRobot TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc.$33.99View
Oumefar⏳pH MetersWater Quality Tester Design Digital PH meter Analyzer Measurement Meter AS218 Acidity 0.00 to 14.00 for Indoor for Aquarium Swimming Waste Water Treatment$175.99View
Raguso⏳pH MetersRaguso PH Electrode Probe Electrode PH Monitor Probe Smart Sensor Meter Digital PH Meter with BNC Connector for Aquarium Hydroponic Laboratory$47.99View
Mocoli⏳pH MetersPH Meter Digital Water Quality Meter 3 in 1 TDS/PH/TEMP Meter, LCD Display, Auto Calibration, Auto-Shutdown, High Precision, Ideal for Drinking Water/Swimming Pool/Aquarium/Pools$82.99View
Goshyda⏳pH MetersGoshyda PH Sensor Meter PH Testing, with BNC Connector, PH Sensor Module + PH Probe Composite Electrode Test Code sensor$56.99View
Nynel⏳pH MetersNynelly 15 Pack pH Meter Buffer Calibration Solution Powder for Precisely Calibrate pH Meter, pH Tester Calibration Powder Packets, pH 4.00/6.86/9.18$19.99View
Bartovation⏳pH MeterspH Buffer Calibration Solution Tablets, pH 4.00, 7.00 and 10.00, Color Coded, Precise and Easy Calibration of All pH Meters [30 Tablets Total, 10 at Each pH Value]$37.99View
FILFEEL⏳Liquid Analysis InstrumentationNutrient Meter Test, Hydroponics Nutrient EC Ppm CF Meter Soil Conductivity Tester$71.99View