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8403 Professional Digital Large LCD Dissolved Oxygen DO Meter Tester Handheld Water Quality Tester with Temperature Measurement

8403 8403 Professional Digital Large LCD Dissolved Oxygen DO Meter Tester Handheld Water Quality Tester with Temperature Measurement - Gain Express 8403 8403 Professional Digital Large LCD Dissolved Oxygen DO Meter Tester Handheld Water Quality Tester with Temperature Measurement - Gain Express

8403 Professional Digital Large LCD Dissolved Oxygen DO Meter Tester Handheld Water Quality Tester with Temperature Measurement

$212.90 USD

HTM-42 Portable Digital Grain Moisture Meter, Compact High Quality Rice Corn Wheat Tester Analyzer- Range 5~30%, Temperature Humidity Measure

HTM - 42 HTM - 42 Portable Digital Grain Moisture Meter, Compact High Quality Rice Corn Wheat Tester Analyzer - Range 5~30%, Temperature Humidity Measure - Gain Express HTM - 42 HTM - 42 Portable Digital Grain Moisture Meter, Compact High Quality Rice Corn Wheat Tester Analyzer - Range 5~30%, Temperature Humidity Measure - Gain Express
-20%

HTM-42 Portable Digital Grain Moisture Meter, Compact High Quality Rice Corn Wheat Tester Analyzer- Range 5~30%, Temperature Humidity Measure

$48.72 USD
$60.90 USD

ECS-23852 0.4 - 4.4EC EC/ppm/CF Nutra-wand / Hydroponic Meter Stick

Gain Express ECS-23852 0.4 - 4.4EC EC/ppm/CF Nutra-wand / Hydroponic Meter Stick Gain Express ECS-23852 0.4 - 4.4EC EC/ppm/CF Nutra-wand / Hydroponic Meter Stick

ECS-23852 0.4 - 4.4EC EC/ppm/CF Nutra-wand / Hydroponic Meter Stick

$43.90 USD

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

WQM-525 WiFi Smart pH Meter 8-in-1, Multi-Parameter Water Quality Tester for pH / TDS / EC / Salinity / ORP / Temp for Aquarium, Hydroponics, Pool

WQM-525 WiFi Smart pH Meter 8-in-1 Multi-Parameter Water Quality Tester for pH/TDS/EC/Salinity/ORP/Temp for Aquarium WQM-525 WiFi Smart pH Meter 8-in-1 Multi-Parameter Water Quality Tester for pH/TDS/EC/Salinity/ORP/Temp for Aquarium

WQM-525 WiFi Smart pH Meter 8-in-1, Multi-Parameter Water Quality Tester for pH / TDS / EC / Salinity / ORP / Temp for Aquarium, Hydroponics, Pool

$128.90 USD

PHC-493 PH / EC /Temp Meter Smart Acidity & Conductivity Range Controller Monitoring and Dosing in Water pH Meter Conductivity Temp Tester App Remote Online Monitor for Swimming Pool Aquaculture Fishpond

PHC-493 PH / EC /Temp Meter Smart Acidity & Conductivity Range Controller Monitoring and Dosing in Water pH Meter PHC-493 PH / EC /Temp Meter Smart Acidity & Conductivity Range Controller Monitoring and Dosing in Water pH Meter

PHC-493 PH / EC /Temp Meter Smart Acidity & Conductivity Range Controller Monitoring and Dosing in Water pH Meter Conductivity Temp Tester App Remote Online Monitor for Swimming Pool Aquaculture Fishpond

SLM-25 Sound Level Meter with Backlit Display High Accuracy Measuring 30dB~130dB with Data Logging Function Instrument Compact Professional

SLM - 25 Sound Level Meter with Backlit Display High Accuracy Measuring 30dB~130dB with Data Logging Function Instrument Compact Professional - Gain Express SLM - 25 Sound Level Meter with Backlit Display High Accuracy Measuring 30dB~130dB with Data Logging Function Instrument Compact Professional - Gain Express

SLM-25 Sound Level Meter with Backlit Display High Accuracy Measuring 30dB~130dB with Data Logging Function Instrument Compact Professional

$60.90 USD

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

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

REB-90ATC 3-in-1 Honey Refractometer Brix/Moisture/Baume Tester Meter ATC, Tri-Scale 58-90%/12-27%/38-43Be', Sugar Water Content Level Beekeeping Maple Syrup, Test Kit w/Calibration Oil & Block

REB - 90ATC 3 - in - 1 Honey Refractometer Brix/Moisture/Baume Tester Meter ATC, Tri - Scale 58 - 90%/12 - 27%/38 - 43Be', Sugar Water Content Level Beekeeping Maple Syrup, Test Kit w/Calibration Oil & Block - Gain Express REB - 90ATC 3 - in - 1 Honey Refractometer Brix/Moisture/Baume Tester Meter ATC, Tri - Scale 58 - 90%/12 - 27%/38 - 43Be', Sugar Water Content Level Beekeeping Maple Syrup, Test Kit w/Calibration Oil & Block - Gain Express

REB-90ATC 3-in-1 Honey Refractometer Brix/Moisture/Baume Tester Meter ATC, Tri-Scale 58-90%/12-27%/38-43Be', Sugar Water Content Level Beekeeping Maple Syrup, Test Kit w/Calibration Oil & Block

$31.90 USD

SLM-441 Decibel Meter Datalogger Sound Level Tester Noise Decibel Reader Monitor SPL Meter with 43,000 Data Record, Visual Alarm, A/C Weighted, PC Connection Colored Screen Display for Home, Classroom, Traffic Noise Monitoring etc.

SLM - 441 Decibel Meter Datalogger Sound Level Tester Noise Decibel Reader Monitor SPL Meter with 43,000 Data Record, Visual Alarm, A/C Weighted, PC Connection Colored Screen Display for Home, Classroom, Traffic Noise Monitoring etc. - Gain Express SLM - 441 Decibel Meter Datalogger Sound Level Tester Noise Decibel Reader Monitor SPL Meter with 43,000 Data Record, Visual Alarm, A/C Weighted, PC Connection Colored Screen Display for Home, Classroom, Traffic Noise Monitoring etc. - Gain Express

SLM-441 Decibel Meter Datalogger Sound Level Tester Noise Decibel Reader Monitor SPL Meter with 43,000 Data Record, Visual Alarm, A/C Weighted, PC Connection Colored Screen Display for Home, Classroom, Traffic Noise Monitoring etc.

$48.90 USD
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