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WQM-560 Floating Water Quality Tester 9-in-1 pH ORP Chlorine EC CF TDS Salt S.G. Temp, Smart Tuya App Compatible with iOS & Android, 24/7 Auto Water Monitoring for Aquariums, Pools, Hot Tubs, Spas & Hydroponics

WQM-560 Floating Water Quality Tester 9-in-1 pH ORP Chlorine EC CF TDS Salt S.G. Temp Smart Tuya App Compatible with WQM-560 Floating Water Quality Tester 9-in-1 pH ORP Chlorine EC CF TDS Salt S.G. Temp Smart Tuya App Compatible with

WQM-560 Floating Water Quality Tester 9-in-1 pH ORP Chlorine EC CF TDS Salt S.G. Temp, Smart Tuya App Compatible with iOS & Android, 24/7 Auto Water Monitoring for Aquariums, Pools, Hot Tubs, Spas & Hydroponics

$79.90 USD

WQM-553 8-in-1 Wifi Tuya Smart Swimming Pool Water Monitor for pH / Temperature / TDS / Electrical Conductivity / Salinity / Chlorine / Specific Gravity / ORP for Pool, Spa, Tubs

WQM-553 8-in-1 Wifi Tuya Smart Swimming Pool Water Monitor for pH / Temperature / TDS / Electrical Conductivity WQM-553 8-in-1 Wifi Tuya Smart Swimming Pool Water Monitor for pH / Temperature / TDS / Electrical Conductivity

WQM-553 8-in-1 Wifi Tuya Smart Swimming Pool Water Monitor for pH / Temperature / TDS / Electrical Conductivity / Salinity / Chlorine / Specific Gravity / ORP for Pool, Spa, Tubs

$134.90 USD

WQM-546 Multi-Parameter Water Quality Tester – UV Absorbance for COD / TOC / UV275, EC / TDS / Salinity / GH / S.G. / Temp, Intelligent 4-Color Score, Auto Temp Compensation – for Tap, Purified, Ground, Seawater & Aquaculture

WQM-546 Multi-Parameter Water Quality Tester – UV Absorbance for COD/TOC/UV275 EC/TDS/Salinity/GH/S.G./Temp Intelligent WQM-546 Multi-Parameter Water Quality Tester – UV Absorbance for COD/TOC/UV275 EC/TDS/Salinity/GH/S.G./Temp Intelligent

WQM-546 Multi-Parameter Water Quality Tester – UV Absorbance for COD / TOC / UV275, EC / TDS / Salinity / GH / S.G. / Temp, Intelligent 4-Color Score, Auto Temp Compensation – for Tap, Purified, Ground, Seawater & Aquaculture

$63.90 USD

WQM-504 Smart Aquarium Water Quality Monitor – 7-in-1 Real-Time Water Tester for pH, Temperature, TDS, EC, Salinity, Specific Gravity & ORP – WiFi Connected with Mobile Alerts

WQM-504 Smart Aquarium Water Quality Monitor – 7-in-1 Real-Time Water Tester for pH, Temperature, TDS, EC, Salinity, Specific Gravity & ORP – WiFi Connected with Mobile Alerts WQM-504 Smart Aquarium Water Quality Monitor – 7-in-1 Real-Time Water Tester for pH, Temperature, TDS, EC, Salinity, Specific Gravity & ORP – WiFi Connected with Mobile Alerts

WQM-504 Smart Aquarium Water Quality Monitor – 7-in-1 Real-Time Water Tester for pH, Temperature, TDS, EC, Salinity, Specific Gravity & ORP – WiFi Connected with Mobile Alerts

$109.90 USD

WQM-408 6in1 Water Quality Testing Meter TOC UV275 EC TDS COD Temp Tester, Intelligent Scoring Mode, Colored Backlight Indicator Digital Water Test Kit for Home Drinking Water, Tap Industrial Water etc.

WQM - 408 6in1 Water Quality Testing Meter TOC UV275 EC TDS COD Temp Tester, Intelligent Scoring Mode, Colored Backlight Indicator Digital Water Test Kit for Home Drinking Water, Tap Industrial Water etc. - Gain Express WQM - 408 6in1 Water Quality Testing Meter TOC UV275 EC TDS COD Temp Tester, Intelligent Scoring Mode, Colored Backlight Indicator Digital Water Test Kit for Home Drinking Water, Tap Industrial Water etc. - Gain Express

WQM-408 6in1 Water Quality Testing Meter TOC UV275 EC TDS COD Temp Tester, Intelligent Scoring Mode, Colored Backlight Indicator Digital Water Test Kit for Home Drinking Water, Tap Industrial Water etc.

$54.90 USD

WQM-397 Smart 5-in-1 pH / TDS / Salt / S.G / Temperature WiFi Tester Water Quality for Drinking Supply Aquarium Hydroponics Pool Aquaculture

WQM - 397 Smart 5 - in - 1 pH / TDS / Salt / S.G / Temperature WiFi Tester Water Quality for Drinking Supply Aquarium Hydroponics Pool Aquaculture - Gain Express WQM - 397 Smart 5 - in - 1 pH / TDS / Salt / S.G / Temperature WiFi Tester Water Quality for Drinking Supply Aquarium Hydroponics Pool Aquaculture - Gain Express

WQM-397 Smart 5-in-1 pH / TDS / Salt / S.G / Temperature WiFi Tester Water Quality for Drinking Supply Aquarium Hydroponics Pool Aquaculture

$62.90 USD

WQM-359 Multi-Parameter 8-in-1 Water Test Kit pH. ORP. EC Conductivity, TDS, Salt, S.G., CF, and Temperature with Online APP Tester

WQM - 359 Multi - Parameter 8 - in - 1 Water Test Kit pH. ORP. EC Conductivity, TDS, Salt, S.G., CF, and Temperature with Online APP Tester - Gain Express WQM - 359 Multi - Parameter 8 - in - 1 Water Test Kit pH. ORP. EC Conductivity, TDS, Salt, S.G., CF, and Temperature with Online APP Tester - Gain Express

WQM-359 Multi-Parameter 8-in-1 Water Test Kit pH. ORP. EC Conductivity, TDS, Salt, S.G., CF, and Temperature with Online APP Tester

$94.90 USD

WQM-354 Water Quality Tester 4-in-1 TDS Temperature S.G Salt Salinity Meter with ATC for Testing Drinking Water, Aquaculture, Aquarium, Hydroponics, Swimming Pools

WQM - 354 Water Quality Tester 4 - in - 1 TDS Temperature S.G Salt Salinity Meter with ATC for Testing Drinking Water, Aquaculture, Aquarium, Hydroponics, Swimming Pools - Gain Express WQM - 354 Water Quality Tester 4 - in - 1 TDS Temperature S.G Salt Salinity Meter with ATC for Testing Drinking Water, Aquaculture, Aquarium, Hydroponics, Swimming Pools - Gain Express

WQM-354 Water Quality Tester 4-in-1 TDS Temperature S.G Salt Salinity Meter with ATC for Testing Drinking Water, Aquaculture, Aquarium, Hydroponics, Swimming Pools

WQM-341 Water Quality Tester pH / EC / TDS / Salinity / SG / Temperature with 24Hrs Online APP Monitoring for Fish Tank Aquariums Home Laboratory Smart Instrument

WQM - 341 Water Quality Tester pH / EC / TDS / Salinity / SG / Temperature with 24Hrs Online APP Monitoring for Fish Tank Aquariums Home Laboratory Smart Instrument - Gain Express WQM - 341 Water Quality Tester pH / EC / TDS / Salinity / SG / Temperature with 24Hrs Online APP Monitoring for Fish Tank Aquariums Home Laboratory Smart Instrument - Gain Express

WQM-341 Water Quality Tester pH / EC / TDS / Salinity / SG / Temperature with 24Hrs Online APP Monitoring for Fish Tank Aquariums Home Laboratory Smart Instrument

WQM-339 7in1 Pentype Tester PH / TDS / EC / ORP / Salinity / S.G. / Temperature Meter Water Tester for Drinking Water, Aquariums, Hydroponics Pools

WQM - 339 7in1 Pentype Tester PH / TDS / EC / ORP / Salinity / S.G. / Temperature Meter Water Tester for Drinking Water, Aquariums, Hydroponics Pools - Gain Express WQM - 339 7in1 Pentype Tester PH / TDS / EC / ORP / Salinity / S.G. / Temperature Meter Water Tester for Drinking Water, Aquariums, Hydroponics Pools - Gain Express

WQM-339 7in1 Pentype Tester PH / TDS / EC / ORP / Salinity / S.G. / Temperature Meter Water Tester for Drinking Water, Aquariums, Hydroponics Pools

$38.90 USD

ECM-302 Pentype 2-in-1 TDS / EC Meter with ATC Digital Water Quality Tester Temperature Measurement for Water Analysis Hydroponics Aquaculture

ECM - 302 ECM - 302 Pentype 2 - in - 1 TDS / EC Meter with ATC Digital Water Quality Tester Temperature Measurement for Water Analysis Hydroponics Aquaculture - Gain Express ECM - 302 ECM - 302 Pentype 2 - in - 1 TDS / EC Meter with ATC Digital Water Quality Tester Temperature Measurement for Water Analysis Hydroponics Aquaculture - Gain Express

ECM-302 Pentype 2-in-1 TDS / EC Meter with ATC Digital Water Quality Tester Temperature Measurement for Water Analysis Hydroponics Aquaculture

837-3_bag Pentype TDS / Salinity / Temperature Tester Water Quality Meter ATC Multiple Units (ppt, ppm, S.G., %, °C, °F) Digital Tool for Saltwater Monitoring & Testing IP65 Waterproof Housing

837 - 3_bag Pentype TDS / Salinity / Temperature Tester Water Quality Meter ATC Multiple Units (ppt, ppm, S.G., %, °C, °F) Digital Tool for Saltwater Monitoring & Testing IP65 Waterproof Housing - Gain Express 837 - 3_bag Pentype TDS / Salinity / Temperature Tester Water Quality Meter ATC Multiple Units (ppt, ppm, S.G., %, °C, °F) Digital Tool for Saltwater Monitoring & Testing IP65 Waterproof Housing - Gain Express

837-3_bag Pentype TDS / Salinity / Temperature Tester Water Quality Meter ATC Multiple Units (ppt, ppm, S.G., %, °C, °F) Digital Tool for Saltwater Monitoring & Testing IP65 Waterproof Housing

837-3 Pentype TDS / Salinity / Temperature Tester Water Quality Meter ATC Multiple Units (ppt, ppm, S.G., %, °C, °F) Digital Tool for Saltwater Monitoring & Testing IP65 Waterproof Housing

837-3 Pentype TDS / Salinity / Temperature Tester Water Quality Meter ATC Multiple Units (ppt ppm S.G. % °C °F) Digital 837 - 3 837 - 3 Pentype TDS / Salinity / Temperature Tester Water Quality Meter ATC Multiple Units (ppt, ppm, S.G., %, °C, °F) Digital Tool for Saltwater Monitoring & Testing IP65 Waterproof Housing - Gain Express

837-3 Pentype TDS / Salinity / Temperature Tester Water Quality Meter ATC Multiple Units (ppt, ppm, S.G., %, °C, °F) Digital Tool for Saltwater Monitoring & Testing IP65 Waterproof Housing

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

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

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

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

PHT-026 6-in-1 Multi-Function Meter Tester EC CF TDS PH °C °F

PHT - 026 PHT - 026 6 - in - 1 Multi - Function Meter Tester EC CF TDS PH °C °F - Gain Express PHT - 026 PHT - 026 6 - in - 1 Multi - Function Meter Tester EC CF TDS PH °C °F - Gain Express

PHT-026 6-in-1 Multi-Function Meter Tester EC CF TDS PH °C °F

M0199720 6-in-1 Water Tester Combo Pen pH, ORP, EC, TDS, Salinity, & Temperature

M0199720 M0199720 6 - in - 1 Water Tester Combo Pen pH, ORP, EC, TDS, Salinity, & Temperature - Gain Express M0199720 M0199720 6 - in - 1 Water Tester Combo Pen pH, ORP, EC, TDS, Salinity, & Temperature - Gain Express

M0199720 6-in-1 Water Tester Combo Pen pH, ORP, EC, TDS, Salinity, & Temperature

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