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Gain Express

Discover a wide selection of high-quality gain express products.

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

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

$GAIN EXPRESS 5-in-1 Automotive Battery Antifreeze Refractometer ATC for Specific Gravity, Windshield Screenwash Fluid, Freezing Point Measurement Tester Meter Coolant Condition$

GAIN EXPRESS 5-in-1 Automotive Battery Antifreeze Refractometer ATC for Specific Gravity, Windshield Screenwash Fluid, Freezing Point Measurement Tester Meter Coolant Condition

Gain Express 3-in-1 ORP PH Temperature Combo Meter Tester, Pen Type ATC -1999~1999mV 0.00-14.00pH 0~50°C, Water Quality Aquarium, Tank, Swimming Pool, Lab, Spa

Gain Express 3-in-1 ORP PH Temperature Combo Meter Tester, Pen Type ATC -1999~1999mV 0.00-14.00pH 0~50°C, Water Quality Aquarium, Tank, Swimming Pool, Lab, Spa

3-in-1 Soil pH Moisture Light Meter Tester Probe Sensor, Gardening Plants Growth Watering Quality Monitoring Acidity Test Tool Kits for Garden Farm Lawn Household (Silver PH/Moisture Meter + Gloves)

3-in-1 Soil pH Moisture Light Meter Tester Probe Sensor, Gardening Plants Growth Watering Quality Monitoring Acidity Test Tool Kits for Garden Farm Lawn Household (Silver PH/Moisture Meter + Gloves)

Digital Pen Type pH & Temperature Meter ATC, 0.00-14.00pH & 0.0-55.0°C Water Quality Tester Test Kit Thermometer, -0.1pH High Accuracy for Aquarium Hydroponics Pool Household Drinking Water

Digital Pen Type pH & Temperature Meter ATC, 0.00-14.00pH & 0.0-55.0°C Water Quality Tester Test Kit Thermometer, -0.1pH High Accuracy for Aquarium Hydroponics Pool Household Drinking Water

ORP Redox Electrode, BNC Type Connector Replacement Probe for Tester Meter Monitor Controller Oxidation Reduction Potential Check, 14cm Long 1.2cm Diameter 300cm Extra Long Cable

ORP Redox Electrode, BNC Type Connector Replacement Probe for Tester Meter Monitor Controller Oxidation Reduction Potential Check, 14cm Long 1.2cm Diameter 300cm Extra Long Cable

Indoor Air Quality Monitor CO2 Meter Detector Professional Portable Carbon Dioxide Detector Temperature Humidity Air Analyzer 3-in-1 with Alarm Data Export for Home, Office, School, Hotel

Indoor Air Quality Monitor CO2 Meter Detector Professional Portable Carbon Dioxide Detector Temperature Humidity Air Analyzer 3-in-1 with Alarm Data Export for Home, Office, School, Hotel

Digital K-Type Thermometer Dual Channel Thermocouple Thermometer with 2 Thermocouples, Measuring Range: -50 to 1300°C (-58 to 2372°F), High-Temperature Meter Measurement Sensor

Digital K-Type Thermometer Dual Channel Thermocouple Thermometer with 2 Thermocouples, Measuring Range: -50 to 1300°C (-58 to 2372°F), High-Temperature Meter Measurement Sensor

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

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

2-in-1 Chlorine & PH Meter Swimming Pool Tester, CL2 Level Meter Test Spa Water Quality Analysis Monitoring Monitor Analyzer, Handheld Portable

2-in-1 Chlorine & PH Meter Swimming Pool Tester, CL2 Level Meter Test Spa Water Quality Analysis Monitoring Monitor Analyzer, Handheld Portable

Bench Type Polariscope LED Light with Glass Rotatable Filters Moissanite,Gemstone,Amethyst,Diamonds

Bench Type Polariscope LED Light with Glass Rotatable Filters Moissanite,Gemstone,Amethyst,Diamonds

$0-10% Brix Refractometer with ATC Low-Concentrated Sugar Solutions Accuracy 0.1% Synthetic Machining Coolants Maple Sap Cutting Liquid CNC Maple Syrup Makers Tea$

0-10% Brix Refractometer with ATC Low-Concentrated Sugar Solutions Accuracy 0.1% Synthetic Machining Coolants Maple Sap Cutting Liquid CNC Maple Syrup Makers Tea

GAIN EXPRESS Compact Pocket Size Digital Shore A Hardness Meter Tester 1-100ha Durometer LCD Display

GAIN EXPRESS Compact Pocket Size Digital Shore A Hardness Meter Tester 1-100ha Durometer LCD Display

Gain Express ORP Redox Meter Tester -1999~1999mV, 1-Point Calibration, Oxidation Reduction Potential (ORP Sol'n 30ML x 2pcs)

Gain Express ORP Redox Meter Tester -1999~1999mV, 1-Point Calibration, Oxidation Reduction Potential (ORP Sol'n 30ML x 2pcs)

Wearable 2-in-1 WBGT + HI Heat Index Checker Wet Bulb Globe Temperature Heat Stress Meter Air Globe Temperature Humidity Tester with Dangerous Level Indicator Audible Alarm

Wearable 2-in-1 WBGT + HI Heat Index Checker Wet Bulb Globe Temperature Heat Stress Meter Air Globe Temperature Humidity Tester with Dangerous Level Indicator Audible Alarm

Thermocouple Thermometer Digital Data Logger Thermometer 4 Channel K/J/T Type Thermocouple Meter Temperature Meter, Temperature Logger with Sound & Light Alarm -200~1372°C (-328~2501°F)

Thermocouple Thermometer Digital Data Logger Thermometer 4 Channel K/J/T Type Thermocouple Meter Temperature Meter, Temperature Logger with Sound & Light Alarm -200~1372°C (-328~2501°F)

Quantum PAR Meter for LED Grow Light Full Spectrum PPFD Meter High Precision Quantum Sensor, Light Meter for Plants, Greenhouse and Farming Lux Meter Tester 400-700nm

Quantum PAR Meter for LED Grow Light Full Spectrum PPFD Meter High Precision Quantum Sensor, Light Meter for Plants, Greenhouse and Farming Lux Meter Tester 400-700nm

Digital 2 Channels K-Type Thermometer w/ 4 Thermocouples (Wired & Stainless Steel), -50~1300°C (-58~2372°F) Handheld Desktop High Temperature Kelvin Scale Dual Measurement Meter Sensor

Digital 2 Channels K-Type Thermometer w/ 4 Thermocouples (Wired & Stainless Steel), -50~1300°C (-58~2372°F) Handheld Desktop High Temperature Kelvin Scale Dual Measurement Meter Sensor

Replacement pH Electrode with Calibration Powder, 0-14 pH Highly Accurate Probe with BNC Connector & 200cm Cable for Continuous Liquid Measurement

Replacement pH Electrode with Calibration Powder, 0-14 pH Highly Accurate Probe with BNC Connector & 200cm Cable for Continuous Liquid Measurement