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77535_CD_ADAPTOR High Accuracy CO2, RH & Temp Real-Time Monitor Kit Set w/PC Software Recording Analyzer, Portable Indoor Air Quality Carbon Dioxide Meter Sensor, Temperature/Dew Point/Wet Bulb/Humidity

77535_CD_ADAPTOR 77535_CD_ADAPTOR High Accuracy CO2, RH & Temp Real - Time Monitor Kit Set w/PC Software Recording Analyzer, Portable Indoor Air Quality Carbon Dioxide Meter Sensor, Temperature/Dew Point/Wet Bulb/Humidity - Gain Express 77535_CD_ADAPTOR 77535_CD_ADAPTOR High Accuracy CO2, RH & Temp Real - Time Monitor Kit Set w/PC Software Recording Analyzer, Portable Indoor Air Quality Carbon Dioxide Meter Sensor, Temperature/Dew Point/Wet Bulb/Humidity - Gain Express

77535_CD_ADAPTOR High Accuracy CO2, RH & Temp Real-Time Monitor Kit Set w/PC Software Recording Analyzer, Portable Indoor Air Quality Carbon Dioxide Meter Sensor, Temperature/Dew Point/Wet Bulb/Humidity

$308.90 USD

7755 Digital CO2 Carbon Dioxide Temperature RH Humidity DP WB NDIR Sensor Indoor Air Quality 9999ppm USB Monitor Logger

7755 Digital CO2 Carbon Dioxide Temperature RH Humidity DP WB NDIR Sensor Indoor Air Quality 9999ppm USB Monitor Logger - Gain Express 7755 Digital CO2 Carbon Dioxide Temperature RH Humidity DP WB NDIR Sensor Indoor Air Quality 9999ppm USB Monitor Logger - Gain Express

7755 Digital CO2 Carbon Dioxide Temperature RH Humidity DP WB NDIR Sensor Indoor Air Quality 9999ppm USB Monitor Logger

$167.90 USD

7755_CD_ADAPTOR Carbon Dioxide (CO2) RH & Temperature Real-Time Air Quality Monitor with PC Software Recording Analyzer

7755_CD_ADAPTOR Carbon Dioxide (CO2) RH & Temperature Real - Time Air Quality Monitor with PC Software Recording Analyzer - Gain Express 7755_CD_ADAPTOR Carbon Dioxide (CO2) RH & Temperature Real - Time Air Quality Monitor with PC Software Recording Analyzer - Gain Express

7755_CD_ADAPTOR Carbon Dioxide (CO2) RH & Temperature Real-Time Air Quality Monitor with PC Software Recording Analyzer

$217.90 USD

77597 6 in 1 Combo Multi-function CO2 & CO & Temperature, Humidity RH %, DP, WB, USB Data Logger with Software, Meter IAQ Tester

77597 6 in 1 Combo Multi - function CO2 & CO & Temperature, Humidity RH %, DP, WB, USB Data Logger with Software, Meter IAQ Tester - Gain Express 77597 6 in 1 Combo Multi - function CO2 & CO & Temperature, Humidity RH %, DP, WB, USB Data Logger with Software, Meter IAQ Tester - Gain Express

77597 6 in 1 Combo Multi-function CO2 & CO & Temperature, Humidity RH %, DP, WB, USB Data Logger with Software, Meter IAQ Tester

8012 Digital Pen type Salinity Meter Salinometer Salt Analyzer

8012 Digital Pen type Salinity Meter Salinometer Salt Analyzer - Gain Express 8012 Digital Pen type Salinity Meter Salinometer Salt Analyzer - Gain Express

8012 Digital Pen type Salinity Meter Salinometer Salt Analyzer

8090 Digital Non-contact Infrared & K-Type Digital Thermometer Thermocouple

8090 Digital Non - contact Infrared & K - Type Digital Thermometer Thermocouple - Gain Express 8090 Digital Non - contact Infrared & K - Type Digital Thermometer Thermocouple - Gain Express

8090 Digital Non-contact Infrared & K-Type Digital Thermometer Thermocouple

810-100 Digital Bevel Box Inclinometer with Magnets & Always Upright Display Protractor Large LCD

810 - 100 Digital Bevel Box Inclinometer with Magnets & Always Upright Display Protractor Large LCD - Gain Express 810 - 100 Digital Bevel Box Inclinometer with Magnets & Always Upright Display Protractor Large LCD - Gain Express
-20%

810-100 Digital Bevel Box Inclinometer with Magnets & Always Upright Display Protractor Large LCD

$34.32 USD
$42.90 USD

810-100SS Digital Bevel Box Inclinometer with Spirit Level Angle Finder Protractor Always Upright Reading

810 - 100SS 810 - 100SS Digital Bevel Box Inclinometer with Spirit Level Angle Finder Protractor Always Upright Reading - Gain Express 810 - 100SS 810 - 100SS Digital Bevel Box Inclinometer with Spirit Level Angle Finder Protractor Always Upright Reading - Gain Express

810-100SS Digital Bevel Box Inclinometer with Spirit Level Angle Finder Protractor Always Upright Reading

$48.90 USD

810-200 Digital Protractor Always Upright Position with Large LCD Display

810 - 200 Digital Protractor Always Upright Position with Large LCD Display - Gain Express 810 - 200 Digital Protractor Always Upright Position with Large LCD Display - Gain Express

810-200 Digital Protractor Always Upright Position with Large LCD Display

82152 Digital Differential Air Pressure Manometer 15.000psi Gauge High Accuracy Portable Meter HVAC Test Tool

82152 Digital Differential Air Pressure Manometer 15.000psi Gauge High Accuracy Portable Meter HVAC Test Tool - Gain Express 82152 Digital Differential Air Pressure Manometer 15.000psi Gauge High Accuracy Portable Meter HVAC Test Tool - Gain Express

82152 Digital Differential Air Pressure Manometer 15.000psi Gauge High Accuracy Portable Meter HVAC Test Tool

835-1 Digital Waterproof EC Conductivity Temperature Meter Tester Pen-type, Dual Display Water Quality, Thermometer, IP65

835 - 1 Digital Waterproof EC Conductivity Temperature Meter Tester Pen - type, Dual Display Water Quality, Thermometer, IP65 - Gain Express 835 - 1 Digital Waterproof EC Conductivity Temperature Meter Tester Pen - type, Dual Display Water Quality, Thermometer, IP65 - Gain Express

835-1 Digital Waterproof EC Conductivity Temperature Meter Tester Pen-type, Dual Display Water Quality, Thermometer, IP65

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

837-1 Salinity & Temp Meter, Pen Type Salt Water Quality Tester ATC NaCl 0~70 ppt, Handheld Measurement Monitor Tester, for Saltwater, Hydroponics, Pool, Aquarium, Fish Pond, Spa, Monitoring & Testing

837 - 1 Salinity & Temp Meter, Pen Type Salt Water Quality Tester ATC NaCl 0~70 ppt, Handheld Measurement Monitor Tester, for Saltwater, Hydroponics, Pool, Aquarium, Fish Pond, Spa, Monitoring & Testing - Gain Express 837 - 1 Salinity & Temp Meter, Pen Type Salt Water Quality Tester ATC NaCl 0~70 ppt, Handheld Measurement Monitor Tester, for Saltwater, Hydroponics, Pool, Aquarium, Fish Pond, Spa, Monitoring & Testing - Gain Express

837-1 Salinity & Temp Meter, Pen Type Salt Water Quality Tester ATC NaCl 0~70 ppt, Handheld Measurement Monitor Tester, for Saltwater, Hydroponics, Pool, Aquarium, Fish Pond, Spa, Monitoring & Testing

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

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

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

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

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

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

868-9 Waterproof Digital pH Meter Tester Thermometer °C °F Replaceable Electrode Pentype Design

868 - 9 868 - 9 Waterproof Digital pH Meter Tester Thermometer °C °F Replaceable Electrode Pentype Design - Gain Express 868 - 9 868 - 9 Waterproof Digital pH Meter Tester Thermometer °C °F Replaceable Electrode Pentype Design - Gain Express

868-9 Waterproof Digital pH Meter Tester Thermometer °C °F Replaceable Electrode Pentype Design

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