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Water Quality Products

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868-5 Waterproof pH meter with Temperature + Auto Calibration

868 - 5 868 - 5 Waterproof pH meter with Temperature + Auto Calibration - Gain Express 868 - 5 868 - 5 Waterproof pH meter with Temperature + Auto Calibration - Gain Express

868-5 Waterproof pH meter with Temperature + Auto Calibration

868-1 0.0-14.0 pH & Temperature Meter ATC Dual Display, Portable Digital Pen-Type Tester, IP67 Waterproof Dustproof, for Hydroponics Aquariums Drinking Water Quality Control Testing

868 - 1 868 - 1 0.0 - 14.0 pH & Temperature Meter ATC Dual Display, Portable Digital Pen - Type Tester, IP67 Waterproof Dustproof, for Hydroponics Aquariums Drinking Water Quality Control Testing - Gain Express 868 - 1 868 - 1 0.0 - 14.0 pH & Temperature Meter ATC Dual Display, Portable Digital Pen - Type Tester, IP67 Waterproof Dustproof, for Hydroponics Aquariums Drinking Water Quality Control Testing - Gain Express
-40%

868-1 0.0-14.0 pH & Temperature Meter ATC Dual Display, Portable Digital Pen-Type Tester, IP67 Waterproof Dustproof, for Hydroponics Aquariums Drinking Water Quality Control Testing

$22.14 USD
$36.90 USD

PH-803 Digital pH ORP Redox 2 in 1 Controller Monitor w/ Output Power Relay Control, Electrode Probe BNC, Water Quality Meter Online Continuous Measurement Kit, for Aquarium Hydroponics Plant Pool Spa

PH - 803_EU PH - 803 Digital pH ORP Redox 2 in 1 Controller Monitor w/ Output Power Relay Control, Electrode Probe BNC, Water Quality Meter Online Continuous Measurement Kit, for Aquarium Hydroponics Plant Pool Spa - Gain Express PH - 803_EU PH - 803 Digital pH ORP Redox 2 in 1 Controller Monitor w/ Output Power Relay Control, Electrode Probe BNC, Water Quality Meter Online Continuous Measurement Kit, for Aquarium Hydroponics Plant Pool Spa - Gain Express

PH-803 Digital pH ORP Redox 2 in 1 Controller Monitor w/ Output Power Relay Control, Electrode Probe BNC, Water Quality Meter Online Continuous Measurement Kit, for Aquarium Hydroponics Plant Pool Spa

PH-301 DIGITAL PH CONTROLLER + BNC ELECTRODE 220V or 110V CO2

PH - 301_US PH - 301 DIGITAL PH CONTROLLER + BNC ELECTRODE 220V or 110V CO2 - Gain Express PH - 301_US PH - 301 DIGITAL PH CONTROLLER + BNC ELECTRODE 220V or 110V CO2 - Gain Express

PH-301 DIGITAL PH CONTROLLER + BNC ELECTRODE 220V or 110V CO2

PH-251 New pH Meter + Adaptor + Replaceable Electrode

PH - 251 New pH Meter + Adaptor + Replaceable Electrode - Gain Express PH - 251 New pH Meter + Adaptor + Replaceable Electrode - Gain Express

PH-251 New pH Meter + Adaptor + Replaceable Electrode

PH-203 Digital 2-in-1 pH ORP mV CO2 Controller Meter 0.00~14.00PH Range

PH - 203 Digital 2 - in - 1 pH ORP mV CO2 Controller Meter 0.00~14.00PH Range - Gain Express PH - 203 Digital 2 - in - 1 pH ORP mV CO2 Controller Meter 0.00~14.00PH Range - Gain Express

PH-203 Digital 2-in-1 pH ORP mV CO2 Controller Meter 0.00~14.00PH Range

PH-201 Digital pH Controller + Electrode + Solutions 110V or 220V

PH - 201 Digital pH Controller + Electrode + Solutions 110V or 220V - Gain Express PH - 201 Digital pH Controller + Electrode + Solutions 110V or 220V - Gain Express

PH-201 Digital pH Controller + Electrode + Solutions 110V or 220V

PH-002 Waterproof pH Meter with Auto Buffer Recognition °C °F & Replaceable Electrode

PH - 002 Waterproof pH Meter with Auto Buffer Recognition °C °F & Replaceable Electrode - Gain Express PH - 002 Waterproof pH Meter with Auto Buffer Recognition °C °F & Replaceable Electrode - Gain Express

PH-002 Waterproof pH Meter with Auto Buffer Recognition °C °F & Replaceable Electrode

PH-032 Waterproof pH Meter w/ replaceable pH Electrode

PH - 032 Waterproof pH Meter w/ replaceable pH Electrode - Gain Express PH - 032 Waterproof pH Meter w/ replaceable pH Electrode - Gain Express

PH-032 Waterproof pH Meter w/ replaceable pH Electrode

PH-031 Digital Pen Type pH Meter Tester 0.00 - 14.00 pH Range

PH - 031 PH - 031 Digital Pen Type pH Meter Tester 0.00 - 14.00 pH Range - Gain Express PH - 031 PH - 031 Digital Pen Type pH Meter Tester 0.00 - 14.00 pH Range - Gain Express

PH-031 Digital Pen Type pH Meter Tester 0.00 - 14.00 pH Range

PH-025WO Digital pH Monitor Meter ATC 0.00~14.00pH w/ 1.5M Long Cable Electrode Probe, Water Quality Monitoring Tester Kit Aquarium Hydroponics Spa Tank Pool Laboratories Mini Portable

Ph-025Wo Digital Ph Monitor Meter Atc 0.00~14.00Ph W/ 1.5M Long Cable Electrode Probe Water Quality Ph-025Wo Digital Ph Monitor Meter Atc 0.00~14.00Ph W/ 1.5M Long Cable Electrode Probe Water Quality

PH-025WO Digital pH Monitor Meter ATC 0.00~14.00pH w/ 1.5M Long Cable Electrode Probe, Water Quality Monitoring Tester Kit Aquarium Hydroponics Spa Tank Pool Laboratories Mini Portable

PH-025 Digital pH Monitor Meter ATC 0.00~14.00pH w/ Power Adaptor & 1.5M Long Electrode Probe, Continuous Water Quality Monitoring Tester Kit Aquarium Hydroponics Spa Tank Pool Laboratories Portable

PH - 025 Digital pH Monitor Meter ATC 0.00~14.00pH w/ Power Adaptor & 1.5M Long Electrode Probe, Continuous Water Quality Monitoring Tester Kit Aquarium Hydroponics Spa Tank Pool Laboratories Portable - Gain Express PH - 025 Digital pH Monitor Meter ATC 0.00~14.00pH w/ Power Adaptor & 1.5M Long Electrode Probe, Continuous Water Quality Monitoring Tester Kit Aquarium Hydroponics Spa Tank Pool Laboratories Portable - Gain Express

PH-025 Digital pH Monitor Meter ATC 0.00~14.00pH w/ Power Adaptor & 1.5M Long Electrode Probe, Continuous Water Quality Monitoring Tester Kit Aquarium Hydroponics Spa Tank Pool Laboratories Portable

PH-014 Digital Pen Type pH Meter 0-14pH ATC

Ph-014 Digital Pen Type Ph Meter 0-14Ph Atc Meters Ph-014 Digital Pen Type Ph Meter 0-14Ph Atc Meters

PH-014 Digital Pen Type pH Meter 0-14pH ATC

PH-0131 Digital pH / ORP mV / Temperature Meter Water Quality Tester with ATC Replaceable pH ORP Electrode Detachable Temperature Probe for Aquarium, Laboratory Test, Hydroponics Water Testing Tool

PH - 0131 PH - 0131 Digital pH / ORP mV / Temperature Meter Water Quality Tester with ATC Replaceable pH ORP Electrode Detachable Temperature Probe for Aquarium, Laboratory Test, Hydroponics Water Testing Tool - Gain Express PH - 0131 PH - 0131 Digital pH / ORP mV / Temperature Meter Water Quality Tester with ATC Replaceable pH ORP Electrode Detachable Temperature Probe for Aquarium, Laboratory Test, Hydroponics Water Testing Tool - Gain Express

PH-0131 Digital pH / ORP mV / Temperature Meter Water Quality Tester with ATC Replaceable pH ORP Electrode Detachable Temperature Probe for Aquarium, Laboratory Test, Hydroponics Water Testing Tool

PH-0093 Digital Pen-type pH Meter Tester Thermometer Temperature 0.00-14.00 pH range

PH - 0093 PH - 0093 Digital Pen - type pH Meter Tester Thermometer Temperature 0.00 - 14.00 pH range - Gain Express PH - 0093 PH - 0093 Digital Pen - type pH Meter Tester Thermometer Temperature 0.00 - 14.00 pH range - Gain Express

PH-0093 Digital Pen-type pH Meter Tester Thermometer Temperature 0.00-14.00 pH range

$43.90 USD

pH Powder Calibration Solution 4.01 7.00 10.01 pH set

pH Powder Calibration Solution 4.01 7.00 10.01 pH set - Gain Express pH Powder Calibration Solution 4.01 7.00 10.01 pH set - Gain Express

pH Powder Calibration Solution 4.01 7.00 10.01 pH set

$18.90 USD

PC-104 pH CL2 Chlorine Level Meter Water Quality Tester Monitor

PC - 104 pH CL2 Chlorine Level Meter Water Quality Tester Monitor - Gain Express PC - 104 PC - 104 pH CL2 Chlorine Level Meter Water Quality Tester Monitor - Gain Express

PC-104 pH CL2 Chlorine Level Meter Water Quality Tester Monitor

ORP-8651 3-in-1 Heavy Duty pH, mV & Temperature Meter w/ auto buffer recognition

ORP - 8651 3 - in - 1 Heavy Duty pH, mV & Temperature Meter w/ auto buffer recognition - Gain Express ORP - 8651 3 - in - 1 Heavy Duty pH, mV & Temperature Meter w/ auto buffer recognition - Gain Express
-5%

ORP-8651 3-in-1 Heavy Duty pH, mV & Temperature Meter w/ auto buffer recognition

ORP-1696 ±1999mV ORP REDOX Meter + Electrode Water Quality Tester Laboratory Aquarium Pool

ORP - 1696 ORP - 1696 ±1999mV ORP REDOX Meter + Electrode Water Quality Tester Laboratory Aquarium Pool - Gain Express ORP - 1696 ORP - 1696 ±1999mV ORP REDOX Meter + Electrode Water Quality Tester Laboratory Aquarium Pool - Gain Express

ORP-1696 ±1999mV ORP REDOX Meter + Electrode Water Quality Tester Laboratory Aquarium Pool

ORP-1692 0-1000mV ORP REDOX METER TESTER DURABLE ACCURATE

ORP - 1692 ORP - 1692 0 - 1000mV ORP REDOX METER TESTER DURABLE ACCURATE - Gain Express ORP - 1692 ORP - 1692 0 - 1000mV ORP REDOX METER TESTER DURABLE ACCURATE - Gain Express

ORP-1692 0-1000mV ORP REDOX METER TESTER DURABLE ACCURATE

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