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Water Quality Products

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WQM-243 6 in 1 Professional Multi-parameter pH/ ORP Redox/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter, Digital Multi-function Water Quality Monitor Tester

WQM - 243 6 in 1 Professional Multi - parameter pH/ ORP Redox/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter, Digital Multi - function Water Quality Monitor Tester - Gain Express WQM - 243 6 in 1 Professional Multi - parameter pH/ ORP Redox/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter, Digital Multi - function Water Quality Monitor Tester - Gain Express

WQM-243 6 in 1 Professional Multi-parameter pH/ ORP Redox/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter, Digital Multi-function Water Quality Monitor Tester

TDS-240 3-in-1 pH / TDS / Temperature Meter Combo Water Quality Tester Digital Pen-Type with ATC 0.00~14.00pH 0~1999mg/L(ppm) for Laboratories, Hydroponics, Aquariums, Pool, Spa

TDS - 240 3 - in - 1 pH / TDS / Temperature Meter Combo Water Quality Tester Digital Pen - Type with ATC 0.00~14.00pH 0~1999mg/L(ppm) for Laboratories, Hydroponics, Aquariums, Pool, Spa - Gain Express TDS - 240 3 - in - 1 pH / TDS / Temperature Meter Combo Water Quality Tester Digital Pen - Type with ATC 0.00~14.00pH 0~1999mg/L(ppm) for Laboratories, Hydroponics, Aquariums, Pool, Spa - Gain Express

TDS-240 3-in-1 pH / TDS / Temperature Meter Combo Water Quality Tester Digital Pen-Type with ATC 0.00~14.00pH 0~1999mg/L(ppm) for Laboratories, Hydroponics, Aquariums, Pool, Spa

PH-014 Pocket Size 0.0-14.0 pH Meter, Digital Water Quality Tester Pen Type ATC ±0.1pH Measurement, Portable Kit for Household Drinking Water, Swimming Pools, Aquariums, Hydroponics

PH - 014_BLK PH - 014 Pocket Size 0.0 - 14.0 pH Meter, Digital Water Quality Tester Pen Type ATC ±0.1pH Measurement, Portable Kit for Household Drinking Water, Swimming Pools, Aquariums, Hydroponics - Gain Express PH - 014_BLUE PH - 014 Pocket Size 0.0 - 14.0 pH Meter, Digital Water Quality Tester Pen Type ATC ±0.1pH Measurement, Portable Kit for Household Drinking Water, Swimming Pools, Aquariums, Hydroponics - Gain Express

PH-014 Pocket Size 0.0-14.0 pH Meter, Digital Water Quality Tester Pen Type ATC ±0.1pH Measurement, Portable Kit for Household Drinking Water, Swimming Pools, Aquariums, Hydroponics

WQM-241 pH / EC / Temperature Meter ATC 3 in 1 Waterproof Pen Type Water Quality Combo Multi-Parameter Tester Monitor Analyzer Acidometer , Test Kit for Aquariums Hydroponics Pool Spa Drinking Purity

WQM - 241 pH / EC / Temperature Meter ATC 3 in 1 Waterproof Pen Type Water Quality Combo Multi - Parameter Tester Monitor Analyzer Acidometer , Test Kit for Aquariums Hydroponics Pool Spa Drinking Purity - Gain Express WQM - 241 pH / EC / Temperature Meter ATC 3 in 1 Waterproof Pen Type Water Quality Combo Multi - Parameter Tester Monitor Analyzer Acidometer , Test Kit for Aquariums Hydroponics Pool Spa Drinking Purity - Gain Express

WQM-241 pH / EC / Temperature Meter ATC 3 in 1 Waterproof Pen Type Water Quality Combo Multi-Parameter Tester Monitor Analyzer Acidometer , Test Kit for Aquariums Hydroponics Pool Spa Drinking Purity

$49.90 USD

WQM-242 5-in-1 Water Quality Multi-parameter PH EC CF TDS (ppm) Temperature Test Meter Backlight, Wall-mountable Rechargeable Continuous Monitor Tester, Aquariums Hydroponics Pool Fish Tank Pond Drinking

WQM - 242 5 - in - 1 Water Quality Multi - parameter PH EC CF TDS (ppm) Temperature Test Meter Backlight, Wall - mountable Rechargeable Continuous Monitor Tester, Aquariums Hydroponics Pool Fish Tank Pond Drinking - Gain Express WQM - 242 5 - in - 1 Water Quality Multi - parameter PH EC CF TDS (ppm) Temperature Test Meter Backlight, Wall - mountable Rechargeable Continuous Monitor Tester, Aquariums Hydroponics Pool Fish Tank Pond Drinking - Gain Express

WQM-242 5-in-1 Water Quality Multi-parameter PH EC CF TDS (ppm) Temperature Test Meter Backlight, Wall-mountable Rechargeable Continuous Monitor Tester, Aquariums Hydroponics Pool Fish Tank Pond Drinking

837-2 Salinity & Temp Meter Pen Type Salt Water Quality Tester ATC NaCl, 9999 ppm / 100.0ppt/ 10% / 0.95-1.08 SG Measurement Units 3-in-1 Checker for Saltwater Aquarium Pond Food Pool Cooking Seawater

837 - 2 Salinity & Temp Meter Pen Type Salt Water Quality Tester ATC NaCl, 9999 ppm / 100.0ppt/ 10% / 0.95 - 1.08 SG Measurement Units 3 - in - 1 Checker for Saltwater Aquarium Pond Food Pool Cooking Seawater - Gain Express 837 - 2 Salinity & Temp Meter Pen Type Salt Water Quality Tester ATC NaCl, 9999 ppm / 100.0ppt/ 10% / 0.95 - 1.08 SG Measurement Units 3 - in - 1 Checker for Saltwater Aquarium Pond Food Pool Cooking Seawater - Gain Express

837-2 Salinity & Temp Meter Pen Type Salt Water Quality Tester ATC NaCl, 9999 ppm / 100.0ppt/ 10% / 0.95-1.08 SG Measurement Units 3-in-1 Checker for Saltwater Aquarium Pond Food Pool Cooking Seawater

PHC-244 2 in 1 Digital pH & ORP Redox Controller with Separate Relays Replaceable Electrode BNC Type Probe Water Quality Monitor Tester for Aquarium Hydroponics Tank 14.00pH / 1999mV with Calibration Solution

PHC - 244_110V PHC - 244 2 in 1 Digital pH & ORP Redox Controller with Separate Relays Replaceable Electrode BNC Type Probe Water Quality Monitor Tester for Aquarium Hydroponics Tank 14.00pH / 1999mV with Calibration Solution - Gain Express PHC - 244_110V PHC - 244 2 in 1 Digital pH & ORP Redox Controller with Separate Relays Replaceable Electrode BNC Type Probe Water Quality Monitor Tester for Aquarium Hydroponics Tank 14.00pH / 1999mV with Calibration Solution - Gain Express

PHC-244 2 in 1 Digital pH & ORP Redox Controller with Separate Relays Replaceable Electrode BNC Type Probe Water Quality Monitor Tester for Aquarium Hydroponics Tank 14.00pH / 1999mV with Calibration Solution

ORP-235 pH mV ORP Temperature 3 in 1 Redox Meter, Removable Electrode Portable Water Quality Tester Thermometer Analysis for Hydroponic Aquarium Fish Tank

ORP - 235 ORP - 235 pH mV ORP Temperature 3 in 1 Redox Meter, Removable Electrode Portable Water Quality Tester Thermometer Analysis for Hydroponic Aquarium Fish Tank - Gain Express ORP - 235 ORP - 235 pH mV ORP Temperature 3 in 1 Redox Meter, Removable Electrode Portable Water Quality Tester Thermometer Analysis for Hydroponic Aquarium Fish Tank - Gain Express

ORP-235 pH mV ORP Temperature 3 in 1 Redox Meter, Removable Electrode Portable Water Quality Tester Thermometer Analysis for Hydroponic Aquarium Fish Tank

PHM-234 3-in-1 pH, EC & TDS Conductivity Monitor ATC w/ 3.5" Large Dual Display, Water Quality Meter Tester for Aquaculture, Aquarium, Pond, Hydroponics

PHM - 234 PHM - 234 3 - in - 1 pH, EC & TDS Conductivity Monitor ATC w/ 3.5 PHM - 234 PHM - 234 3 - in - 1 pH, EC & TDS Conductivity Monitor ATC w/ 3.5

PHM-234 3-in-1 pH, EC & TDS Conductivity Monitor ATC w/ 3.5" Large Dual Display, Water Quality Meter Tester for Aquaculture, Aquarium, Pond, Hydroponics

PHM-233 6 in 1 Professional Multi-parameter pH/ ORP/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter, Digital Multi-function Water Quality Monitor Tester

PHM - 233 PHM - 233 6 in 1 Professional Multi - parameter pH/ ORP/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter, Digital Multi - function Water Quality Monitor Tester - Gain Express PHM - 233 PHM - 233 6 in 1 Professional Multi - parameter pH/ ORP/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter, Digital Multi - function Water Quality Monitor Tester - Gain Express

PHM-233 6 in 1 Professional Multi-parameter pH/ ORP/ EC/ CF/ TDS PPM/ Temperature Combo Testing Meter, Digital Multi-function Water Quality Monitor Tester

TDS-232 Digital Combo pH & TDS Monitor Meter Tester ATC, 0.00~14.00pH & 0.0~199.9ppt Rechargeable Water Quality Real-time Monitoring, for Aquaculture, Salinity, Aquarium, Pond, Hydroponics

TDS - 232 Digital Combo pH & TDS Monitor Meter Tester ATC, 0.00~14.00pH & 0.0~199.9ppt Rechargeable Water Quality Real - time Monitoring, for Aquaculture, Salinity, Aquarium, Pond, Hydroponics - Gain Express TDS - 232 Digital Combo pH & TDS Monitor Meter Tester ATC, 0.00~14.00pH & 0.0~199.9ppt Rechargeable Water Quality Real - time Monitoring, for Aquaculture, Salinity, Aquarium, Pond, Hydroponics - Gain Express

TDS-232 Digital Combo pH & TDS Monitor Meter Tester ATC, 0.00~14.00pH & 0.0~199.9ppt Rechargeable Water Quality Real-time Monitoring, for Aquaculture, Salinity, Aquarium, Pond, Hydroponics

PHM-230 Digital Online pH & Temperature Continuous Monitor Meter, Water Quality Monitoring Tester for Aquarium Swimming Pool Tank Hydroponic Pond Spa

PHM - 230 PHM - 230 Digital Online pH & Temperature Continuous Monitor Meter, Water Quality Monitoring Tester for Aquarium Swimming Pool Tank Hydroponic Pond Spa - Gain Express PHM - 230 PHM - 230 Digital Online pH & Temperature Continuous Monitor Meter, Water Quality Monitoring Tester for Aquarium Swimming Pool Tank Hydroponic Pond Spa - Gain Express

PHM-230 Digital Online pH & Temperature Continuous Monitor Meter, Water Quality Monitoring Tester for Aquarium Swimming Pool Tank Hydroponic Pond Spa

PHM-229 Digital Aquarium pH Monitor Meter Tester with Replaceable Electrode, Continuous Monitoring Fish Tank, Aquaculture and Hydroponics

PHM - 229 PHM - 229 Digital Aquarium pH Monitor Meter Tester with Replaceable Electrode, Continuous Monitoring Fish Tank, Aquaculture and Hydroponics - Gain Express PHM - 229 PHM - 229 Digital Aquarium pH Monitor Meter Tester with Replaceable Electrode, Continuous Monitoring Fish Tank, Aquaculture and Hydroponics - Gain Express

PHM-229 Digital Aquarium pH Monitor Meter Tester with Replaceable Electrode, Continuous Monitoring Fish Tank, Aquaculture and Hydroponics

ECM-231 Online PH & EC Conductivity Monitor Meter Tester ATC, Water Quality Real-time Continuous Monitoring, Rechargeable, for Aquaculture, Aquarium, Pond, Hydroponics

ECM - 231_EU ECM - 231 Online PH & EC Conductivity Monitor Meter Tester ATC, Water Quality Real - time Continuous Monitoring, Rechargeable, for Aquaculture, Aquarium, Pond, Hydroponics - Gain Express ECM - 231_EU ECM - 231 Online PH & EC Conductivity Monitor Meter Tester ATC, Water Quality Real - time Continuous Monitoring, Rechargeable, for Aquaculture, Aquarium, Pond, Hydroponics - Gain Express

ECM-231 Online PH & EC Conductivity Monitor Meter Tester ATC, Water Quality Real-time Continuous Monitoring, Rechargeable, for Aquaculture, Aquarium, Pond, Hydroponics

ECM-227 Digital LCD EC Conductivity Meter Tester 0~19.99ms/cm Pen Type with Backlight, Hydroponics, Aquaculture, Water Systems

ECM - 227 ECM - 227 Digital LCD EC Conductivity Meter Tester 0~19.99ms/cm Pen Type with Backlight, Hydroponics, Aquaculture, Water Systems - Gain Express ECM - 227 ECM - 227 Digital LCD EC Conductivity Meter Tester 0~19.99ms/cm Pen Type with Backlight, Hydroponics, Aquaculture, Water Systems - Gain Express

ECM-227 Digital LCD EC Conductivity Meter Tester 0~19.99ms/cm Pen Type with Backlight, Hydroponics, Aquaculture, Water Systems

PHM-226 3-in-1 pH Temperature Conductivity EC Meter Tester Digital Pen-Type 19.99 mS/cm, Aquarium, Tank, Swimming Pool, Lab, Spa

PHM - 226 PHM - 226 3 - in - 1 pH Temperature Conductivity EC Meter Tester Digital Pen - Type 19.99 mS/cm, Aquarium, Tank, Swimming Pool, Lab, Spa - Gain Express PHM - 226 PHM - 226 3 - in - 1 pH Temperature Conductivity EC Meter Tester Digital Pen - Type 19.99 mS/cm, Aquarium, Tank, Swimming Pool, Lab, Spa - Gain Express

PHM-226 3-in-1 pH Temperature Conductivity EC Meter Tester Digital Pen-Type 19.99 mS/cm, Aquarium, Tank, Swimming Pool, Lab, Spa

PHM-237 Economical pH Pocket Meter Tester Size with Clip, High Accuracy Removable Probe Electrode, Laboratory, School, Aquarium

PHM - 237 PHM - 237 Economical pH Pocket Meter Tester Size with Clip, High Accuracy Removable Probe Electrode, Laboratory, School, Aquarium - Gain Express PHM - 237 PHM - 237 Economical pH Pocket Meter Tester Size with Clip, High Accuracy Removable Probe Electrode, Laboratory, School, Aquarium - Gain Express

PHM-237 Economical pH Pocket Meter Tester Size with Clip, High Accuracy Removable Probe Electrode, Laboratory, School, Aquarium

PHM-224 PH ORP Temperature 3-in-1 Combo Meter Tester Pen Type with Automatic Temperature Compensation

Phm-224 Ph Orp Temperature 3-In-1 Combo Meter Tester Pen Type With Automatic Compensation Water Phm-224 Ph Orp Temperature 3-In-1 Combo Meter Tester Pen Type With Automatic Compensation Water

PHM-224 PH ORP Temperature 3-in-1 Combo Meter Tester Pen Type with Automatic Temperature Compensation

$72.90 USD

ORP-228 ORP Redox Meter Tester -1999~1999mV, 1-point Calibration, Oxidation Reduction Potential, Aquariums, Swimming Pools, Water Treatment Systems, Aquaculture, Spa

ORP - 228 ORP - 228 ORP Redox Meter Tester - 1999~1999mV, 1 - point Calibration, Oxidation Reduction Potential, Aquariums, Swimming Pools, Water Treatment Systems, Aquaculture, Spa - Gain Express ORP - 228 ORP - 228 ORP Redox Meter Tester - 1999~1999mV, 1 - point Calibration, Oxidation Reduction Potential, Aquariums, Swimming Pools, Water Treatment Systems, Aquaculture, Spa - Gain Express

ORP-228 ORP Redox Meter Tester -1999~1999mV, 1-point Calibration, Oxidation Reduction Potential, Aquariums, Swimming Pools, Water Treatment Systems, Aquaculture, Spa

$37.90 USD

PH-035 Waterproof Digital pH and Temperature Meter °C / °F 0.00~14.00 pH Range with 2-Liner Display

Ph-035 Waterproof Digital Ph And Temperature Meter °C / °F 0.00~14.00 Range With 2-Liner Display Ph-035 Waterproof Digital Ph And Temperature Meter °C / °F 0.00~14.00 Range With 2-Liner Display
-10%

PH-035 Waterproof Digital pH and Temperature Meter °C / °F 0.00~14.00 pH Range with 2-Liner Display

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