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PAR-499 Digital PAR DLI Meter Datalogger Plant Light Meter for Growers, Measures PAR & Daily Light Integral (400-700nm) Photosynthetic Light, Ideal for Hydroponics, Greenhouses & Indoor Gardening

PAR-499 Digital PAR DLI Meter Datalogger Plant Light Meter for Growers Measures PAR & Daily Light Integral (400-700nm) PAR-499 Digital PAR DLI Meter Datalogger Plant Light Meter for Growers Measures PAR & Daily Light Integral (400-700nm)

PAR-499 Digital PAR DLI Meter Datalogger Plant Light Meter for Growers, Measures PAR & Daily Light Integral (400-700nm) Photosynthetic Light, Ideal for Hydroponics, Greenhouses & Indoor Gardening

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

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

PHT-027 7-in-1 Meter Tester ORP , PH, CF, EC, TDS (PPM) °F °C

PHT - 027 PHT - 027 7 - in - 1 Meter Tester ORP , PH, CF, EC, TDS (PPM) °F °C - Gain Express PHT - 027 PHT - 027 7 - in - 1 Meter Tester ORP , PH, CF, EC, TDS (PPM) °F °C - Gain Express

PHT-027 7-in-1 Meter Tester ORP , PH, CF, EC, TDS (PPM) °F °C

EC-1385 3-in-1 Digital EC / CF / TDS Meter Combo Water Quality Tester IP65 Waterproof Conductivity with ATC Aquarium, Hydroponic, Laboratories, Environmental Monitoring Test Tool Kit

EC - 1385 EC - 1385 3 - in - 1 Digital EC / CF / TDS Meter Combo Water Quality Tester IP65 Waterproof Conductivity with ATC Aquarium, Hydroponic, Laboratories, Environmental Monitoring Test Tool Kit - Gain Express EC - 1385 EC - 1385 3 - in - 1 Digital EC / CF / TDS Meter Combo Water Quality Tester IP65 Waterproof Conductivity with ATC Aquarium, Hydroponic, Laboratories, Environmental Monitoring Test Tool Kit - Gain Express

EC-1385 3-in-1 Digital EC / CF / TDS Meter Combo Water Quality Tester IP65 Waterproof Conductivity with ATC Aquarium, Hydroponic, Laboratories, Environmental Monitoring Test Tool Kit

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

HTM-41 Digital Wood Moisture Meter 2~70% Humidity 20~90% RH Temperature -10~60°C (14~140°F) Tester, Timber, Damp Detector Portable, Measure Water Percentage in Sheetrock, Bamboo, Paper, Soft Wood

HTM - 41 HTM - 41 Digital Wood Moisture Meter 2~70% Humidity 20~90% RH Temperature - 10~60°C (14~140°F) Tester, Timber, Damp Detector Portable, Measure Water Percentage in Sheetrock, Bamboo, Paper, Soft Wood - Gain Express HTM - 41 HTM - 41 Digital Wood Moisture Meter 2~70% Humidity 20~90% RH Temperature - 10~60°C (14~140°F) Tester, Timber, Damp Detector Portable, Measure Water Percentage in Sheetrock, Bamboo, Paper, Soft Wood - Gain Express

HTM-41 Digital Wood Moisture Meter 2~70% Humidity 20~90% RH Temperature -10~60°C (14~140°F) Tester, Timber, Damp Detector Portable, Measure Water Percentage in Sheetrock, Bamboo, Paper, Soft Wood

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

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

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-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

VA-8040 Moisture & Temperature Meter °C °F Wood Bricks Concrete Cement Lime Mortar CE Marking Dual Meter Tester

VA - 8040 Moisture & Temperature Meter °C °F Wood Bricks Concrete Cement Lime Mortar CE Marking Dual Meter Tester - Gain Express VA - 8040 Moisture & Temperature Meter °C °F Wood Bricks Concrete Cement Lime Mortar CE Marking Dual Meter Tester - Gain Express

VA-8040 Moisture & Temperature Meter °C °F Wood Bricks Concrete Cement Lime Mortar CE Marking Dual Meter Tester

HTM-382 Non-Destructive Digital Moisture Meter Colored LCD Screen Pinless Wood Moisture Tester for Drywall / Masonry / Softwood / Hardwood with Alarm Function

HTM - 382 HTM - 382 Non - Destructive Digital Moisture Meter Colored LCD Screen Pinless Wood Moisture Tester for Drywall / Masonry / Softwood / Hardwood with Alarm Function - Gain Express HTM - 382 HTM - 382 Non - Destructive Digital Moisture Meter Colored LCD Screen Pinless Wood Moisture Tester for Drywall / Masonry / Softwood / Hardwood with Alarm Function - Gain Express

HTM-382 Non-Destructive Digital Moisture Meter Colored LCD Screen Pinless Wood Moisture Tester for Drywall / Masonry / Softwood / Hardwood with Alarm Function

836-1 Digital Conductivity TDS Meter, ppm ppt uS mS °C/°F Pentype Water Quality Tester with ATC

836 - 1 836 - 1 Digital Conductivity TDS Meter, ppm ppt uS mS °C/°F Pentype Water Quality Tester with ATC - Gain Express 836 - 1 836 - 1 Digital Conductivity TDS Meter, ppm ppt uS mS °C/°F Pentype Water Quality Tester with ATC - Gain Express

836-1 Digital Conductivity TDS Meter, ppm ppt uS mS °C/°F Pentype Water Quality Tester with ATC

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

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

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

EC-1383 Pen Type EC / Hydroponics / Nutrient Meter (0~19.99ms/cm)

EC - 1383 EC - 1383 Pen Type EC / Hydroponics / Nutrient Meter (0~19.99ms/cm) - Gain Express EC - 1383 EC - 1383 Pen Type EC / Hydroponics / Nutrient Meter (0~19.99ms/cm) - Gain Express

EC-1383 Pen Type EC / Hydroponics / Nutrient Meter (0~19.99ms/cm)

DIS-62 Digital Laser Distance Meter 100m(328ft) Handheld Range Finder Area & Volume Measuring Tools Meter Tester with Backlight and Spirit Bubble Level, ±1mm accuracy

DIS - 62 DIS - 62 Digital Laser Distance Meter 100m(328ft) Handheld Range Finder Area & Volume Measuring Tools Meter Tester with Backlight and Spirit Bubble Level, ±1mm accuracy - Gain Express DIS - 62 DIS - 62 Digital Laser Distance Meter 100m(328ft) Handheld Range Finder Area & Volume Measuring Tools Meter Tester with Backlight and Spirit Bubble Level, ±1mm accuracy - Gain Express

DIS-62 Digital Laser Distance Meter 100m(328ft) Handheld Range Finder Area & Volume Measuring Tools Meter Tester with Backlight and Spirit Bubble Level, ±1mm accuracy

KC-318 Digital Pinless Non-invasive Inductive Moisture Meter Hard Soft Wood Drywall Masonry Scanner Tricolor Bar Graph Indicator Intelligent Lumber Timber Board Wet Dry Tester Traders Craftsmen DIY

KC - 318 KC - 318 Digital Pinless Non - invasive Inductive Moisture Meter Hard Soft Wood Drywall Masonry Scanner Tricolor Bar Graph Indicator Intelligent Lumber Timber Board Wet Dry Tester Traders Craftsmen DIY - Gain Express KC - 318 KC - 318 Digital Pinless Non - invasive Inductive Moisture Meter Hard Soft Wood Drywall Masonry Scanner Tricolor Bar Graph Indicator Intelligent Lumber Timber Board Wet Dry Tester Traders Craftsmen DIY - Gain Express

KC-318 Digital Pinless Non-invasive Inductive Moisture Meter Hard Soft Wood Drywall Masonry Scanner Tricolor Bar Graph Indicator Intelligent Lumber Timber Board Wet Dry Tester Traders Craftsmen DIY

Showing 421 - 440 of 800 items
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