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Sensors & Meters

Sale Spider Farmer 5-in-1 pH Hydroponic Meter Kit

Spider Farmer 5-in-1 pH Hydroponic Meter Kit

Spider Farmer

$35.99 $49.99

Sale Bluelab pH Pen

Bluelab pH Pen

Bluelab

$99.00 $119.00

Bluelab Soil pH Pen

Bluelab Soil pH Pen

Bluelab

$199.00

Vivosun High Accuracy pH Tester with 0-14 pH Measurement Range

Vivosun High Accuracy pH Tester with 0-14 pH Measurement Range

VIVOSUN

$9.99

Vivosun 30X-60X Jewelers Loupe Magnifier with LED Light (2-Pack Black)

Vivosun 30X-60X Jewelers Loupe Magnifier with LED Light (2-Pack Black)

VIVOSUN

$13.99

Vivosun 30X-60X Jewelers Loupe Magnifier with LED Light (1-Pack Black)

Vivosun 30X-60X Jewelers Loupe Magnifier with LED Light (1-Pack Black)

VIVOSUN

$10.99

HALO2 GroLine Wireless pH Tester for Soil

HALO2 GroLine Wireless pH Tester for Soil

HANNA GroLine

$164.99

Mammoth Lighting Par Meter and Spectrometer (Par Meter + Wand)

Mammoth Lighting Par Meter and Spectrometer (Par Meter + Wand)

Mammoth Lighting

$449.95

Bluelab pH And Conductivity Starter Pack

Bluelab pH And Conductivity Starter Pack

Bluelab

$199.00

Vivosun 18-Pack pH Meter Buffer Solution Powder, pH 6.86/4.00/9.18, pH Buffer Powder for Precise and Easy pH Tester Calibration

Vivosun 18-Pack pH Meter Buffer Solution Powder, pH 6.86/4.00/9.18, pH Buffer Powder for Precise and Easy pH Tester Calibration

VIVOSUN

$8.99

HANNA GroLine GroLine Soil pH Tester

HANNA GroLine GroLine Soil pH Tester

HANNA GroLine

$154.99

Bluelab Conductivity Pen

Bluelab Conductivity Pen

Bluelab

$99.00

Hanna GroLine Hydroponics Waterproof pH/EC/TDS/Temperature Portable Meter

Hanna GroLine Hydroponics Waterproof pH/EC/TDS/Temperature Portable Meter

HANNA GroLine

$309.99

Hanna Instruments Multiparameter pH/ORP/EC/TDS/Salinity/DO/Pressure/ Temperature Waterproof Meter

Hanna Instruments Multiparameter pH/ORP/EC/TDS/Salinity/DO/Pressure/ Temperature Waterproof Meter

HANNA GroLine

$1,849.99

Link4 Corporation Digital Temperature And Humidity Sensor

Link4 Corporation Digital Temperature And Humidity Sensor

Link4 Corporation

$506.61

GroLine Hydroponics pH Tester

GroLine Hydroponics pH Tester

HANNA GroLine

$64.99

GroLine Waterproof EC/TDS (ppm) Tester

GroLine Waterproof EC/TDS (ppm) Tester

HANNA GroLine

$109.99

Bluelab Truncheon Nutrient Meter

Bluelab Truncheon Nutrient Meter

Bluelab

$105.00

Bluelab Guardian Monitor With Wi-Fi

Bluelab Guardian Monitor With Wi-Fi

Bluelab

$459.00

Vivosun pH and TDS Meter Combo, Water Test Kit for Drinking Water, Aquarium, Hydroponics, Pool, and RO System

Vivosun pH and TDS Meter Combo, Water Test Kit for Drinking Water, Aquarium, Hydroponics, Pool, and RO System

VIVOSUN

$18.99

Vivosun pH Meter, High Accuracy pH Tester with ATC, Digital pH Pen 0.00–14.00 ±0.01pH, Portable Nutrient Test Meter with Interchangeable Probe for Water

Vivosun pH Meter, High Accuracy pH Tester with ATC, Digital pH Pen 0.00–14.00 ±0.01pH, Portable Nutrient Test Meter with Interchangeable Probe for Water

VIVOSUN

$69.99

Vivosun 3-in-1 Soil Tester

Vivosun 3-in-1 Soil Tester

VIVOSUN

$9.99

Bluelab pH PenPlus

Bluelab pH PenPlus

Bluelab

$121.00

HANNA GroLine Portable Waterproof pH/EC/TDS Meter (High Range)

HANNA GroLine Portable Waterproof pH/EC/TDS Meter (High Range)

HANNA GroLine

$699.99

HANNA GroLine pH/EC/TDS Multiparameter Probe for use with HI9814

HANNA GroLine pH/EC/TDS Multiparameter Probe for use with HI9814

HANNA GroLine

$184.99

GroLine Nutrient Tester

GroLine Nutrient Tester

HANNA GroLine

$99.99

HANNA GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

HANNA GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

HANNA GroLine

$249.99

HANNA GroLine Soil Test Direct Soil Conductivity Tester

HANNA GroLine Soil Test Direct Soil Conductivity Tester

HANNA GroLine

$164.99

Bluelab Commercial Truncheon Nutrient Meter

Bluelab Commercial Truncheon Nutrient Meter

Bluelab

$105.00

Bluelab OnePen

Bluelab OnePen

Bluelab

$249.00

HM Digital Replacement pH sensor for PH-200/COM-360

HM Digital Replacement pH sensor for PH-200/COM-360

HM Digital

$44.95

HM Digital Replacement Probe COM-300

HM Digital Replacement Probe COM-300

HM Digital

$62.95

HM Digital Replacement TDS/EC sensor for HM-200

HM Digital Replacement TDS/EC sensor for HM-200

HM Digital

$44.95

HM Digital Pro PH-200 pH Temp Meter

HM Digital Pro PH-200 pH Temp Meter

HM Digital

$99.95

HM Digital Hydromaster HM100 - Continuous pH TDS EC Temp Meter

HM Digital Hydromaster HM100 - Continuous pH TDS EC Temp Meter

HM Digital

$289.95

Bluelab IntelliDose Automated pH And Nutrient Controller Kit

Bluelab IntelliDose Automated pH And Nutrient Controller Kit

Bluelab

$1,399.00

Bluelab Multimedia pH Meter with Leap Probe Included

Bluelab Multimedia pH Meter with Leap Probe Included

Bluelab

$209.00

Bluelab Pro Automated pH and Nutrient Controller With WI-Fi

Bluelab Pro Automated pH and Nutrient Controller With WI-Fi

Bluelab

$1,499.00

Bluelab Guardian Monitor In-Line With Wifi (On Sale until Aug 31)

Bluelab Guardian Monitor In-Line With Wifi (On Sale until Aug 31)

Bluelab

$675.00

Hanna GroLine Professional Portable Soil pH Meter

Hanna GroLine Professional Portable Soil pH Meter

HANNA GroLine

$924.99

Hanna Instruments Multiparameter pH/ORP/EC/Pressure/Temperature Waterproof Meter

Hanna Instruments Multiparameter pH/ORP/EC/Pressure/Temperature Waterproof Meter

HANNA GroLine

$1,424.99

Hanna Instruments Waterproof Portable Dissolved Oxygen and BOD Meter

Hanna Instruments Waterproof Portable Dissolved Oxygen and BOD Meter

HANNA GroLine

$949.99

HANNA GroLine Instruments pH/EC/TDS & Temp Monitor

HANNA GroLine Instruments pH/EC/TDS & Temp Monitor

HANNA GroLine

$459.99

HANNA GroLine pH, EC/TDS Temperature Monitor

HANNA GroLine pH, EC/TDS Temperature Monitor

HANNA GroLine

$629.99

Vivosun 4-in-1 Sensor, Temperature and Humidity Monitoring with CO₂ and Light Detection, Compatible with GrowHub E42A+

Vivosun 4-in-1 Sensor, Temperature and Humidity Monitoring with CO₂ and Light Detection, Compatible with GrowHub E42A+

VIVOSUN

$49.99

Vivosun VPD Thermometer, Handheld Environmental Monitor, Precision Infrared Laser Thermometer Gun with Adjustable Emissivity, Leaf VPD and Temperature Monitoring for Plants, Grow Tents, HVAC

Vivosun VPD Thermometer, Handheld Environmental Monitor, Precision Infrared Laser Thermometer Gun with Adjustable Emissivity, Leaf VPD and Temperature Monitoring for Plants, Grow Tents, HVAC

VIVOSUN

$29.99

Vivosun Jewelry Loupe Magnifier 30X 60X 90X LED Lighted Eye Loupe

Vivosun Jewelry Loupe Magnifier 30X 60X 90X LED Lighted Eye Loupe

VIVOSUN

$12.99

Vivosun GrowCam C4, 2K QHD WiFi Smart Camera for Grow Tent & VGrow Smart Grow Box, Timelapse, Night Vision, SD Card Storage, 2-Way Audio, App Control

Vivosun GrowCam C4, 2K QHD WiFi Smart Camera for Grow Tent & VGrow Smart Grow Box, Timelapse, Night Vision, SD Card Storage, 2-Way Audio, App Control

VIVOSUN

$49.99

Vivosun Comprehensive Water and Soil Testing Combo for Home, Garden and Hydroponics

Vivosun Comprehensive Water and Soil Testing Combo for Home, Garden and Hydroponics

VIVOSUN

$27.99

Vivosun 30X Rechargeable Loupe Magnifier with Optical Glass Lens and Lights

Vivosun 30X Rechargeable Loupe Magnifier with Optical Glass Lens and Lights

VIVOSUN

$19.99