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GC-01 Geiger Counter Nuclear Radiation Detector, Radiation Dosimeter with LCD Display, Portable Handheld Beta Gamma X-ray Rechargeable Radiation Monitor Meter, 5 Dosage Units, 0.0Sv-500mSv
Limited time offer, ends 11/01
$94.44
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AJMRTC Digital TDS Meter 0-9990ppm Water Purity Tester Pen, Portable Water Quality Monitor Detector for Laboratory, Aquarium, Swimming Pool, Drinking Water, Hydroponics Water Testing Measurement
Limited time offer, ends 11/25
$11.07
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8 in 1 Water Quality Tester, Tuya WiFi Smart Water Quality Meter, DC 6V Wall Mount Digital Aquarium Water Monitor for Fish Tank Hydroponics Labs PH/S.G/EC/Salt/ORP/TDS/CF/Temp
Limited time offer, ends 11/01
$197.84
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Air Quality Monitor, PM0.3/2.5/10 Dust Particle Counter, High Sensitivity 3-Channel Air Quality Tester, Temperature & Humidity Meter, Data Storage/Transfer, Tripod Mount
Limited time offer, ends 11/01
$280.86
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6 in1 PH Meter for Water Hydroponics Accuracy Digital PH Tester pH/EC/TDS/Salt/SG/Temperature Meter with Wireless Wi-Fi PH Monitor via Mobile APP for Household Drinking, Pool and Aquarium
Limited time offer, ends 10/31
$202.70
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Bluetooth Swimming Pool Water Tester 6-in-1 EC/Salinity/pH/ORP/Temperature/Chlorine Meter, Wireless Floating Smart Pool Monitor Water Tester for Pools, Hot Tubs, & Swim Spas
Limited time offer, ends 10/31
$166.70
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EC pH Monitor for Hydroponics, 6-in-1 Water Quality Tester with Wi-Fi, pH Meter Tester, Continuous Monitor of pH PPM EC CF Humidity Temp of Indoor DWC Grow System,Hydro Reservoir Tank
Limited time offer, ends 10/31
$178.70
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2 in 1 pH & Temperature Monitor, pH Meter with Backlight Function, Dual Display 0.00~14.00pH °C/ °F Water Quality Tester pH Monitor for Water, Fish Tank, Aquarium, Hydroponics, Pools
Limited time offer, ends 10/31
$103.70
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Digital Combo pH & Temperature Meter, Aquarium Thermometer pH Monitor with Automatic Calibration Function for Fish Tank Hydroponics Aquaculture Laboratory
Limited time offer, ends 10/31
$109.70
Free Shipping
Gain Express PH & EC Conductivity Monitor Meter Tester Plug-in ATC, Water Quality Real-time Continuous Monitoring, Wall Mountable & Rechargeable, for Aquaculture, Aquarium, Pond, Hydroponics
Limited time offer, ends 10/31
$160.70
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6-in-1 Digital Floating Water Monitor with Bluetooth | Real-Time pH, EC, ORP, Chlorine, Salinity & Temperature Testing | 1000 Data Records, Waterproof IP67, Easy Calibration, 24-Hour Monitoring
Limited time offer, ends 10/31
$178.70
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Professional 6-in-1 Water Quality Monitor Tests pH, TDS, EC, Salinity, SG, Temperature Wi-Fi Smart Sensor with App & Data Logging for Aquarium, Fish Pond, Hydroponics
Limited time offer, ends 10/31
$196.70
Free Shipping