5-in-1 Digital pH Meter Water Quality Tester and Temperature Monitor with Bluetooth App for Hydroponics, Aquariums, and Drinking Water (12.79 inches / 32.5 cm) $31.78 View Details
VEVOR pH Meter, 0-14 pH Range, IP68 Waterproof Probe, 3-Point Auto Calibration, Portable Tester Kit with Calibration Powder Packets, Temperature Probe, Carrying Case, for Drinking Water, Hydroponics $173.48 View Details
Mosiee Hydroponics Monitoring Internal Resistance 250 M BNC Connector ORP Probe for Water Quality Testing Hydroponics $41.12 View Details
Professional Digital BNC PH Electrode Water Probe Sensor Tester Replacement for Aquariums Hydroponics and Laboratories 0-14PH Range / 0-60°C $18.10 View Details
NFTIGB ORP Detection Pen Exquisite Structure Durability High Stability Water Quality Tester Meter for Aquariums, Hydroponics, Pools, 7.48x2.75x1.18 Inches / 19x7x3 cm, Backlight Display $29.89 View Details
Riousery 3-in-1 Water Quality Tester Portable TDS EC Temperature Meter with HD Display, Accurate Digital Water Testing Pen for Drinking Water, Aquariums, Hydroponics and Pools, Blue, 1 Count $8.62 View Details
NFTIGB Portable Digital ORP Tester Pen Water Quality Monitor Detachable Water ORP Meter For Aquarium Hydroponics Swimming Pools -1999 to 1999 mV Range $23.74 View Details
CaraMart 3-In-1 Digital Water Quality Tester 0-9990 PPm For Drinking Water, Swimming Pool $18.93 View Details
TeeRees total Dissolved Solids Sensor Development Board Water Meter Filter Detection,Module - Line $16.89 View Details
BIMZUC Portable Handheld Water Quality Tester 4-in-1 PH Total Dissolved Solids EC Temperature Detector with Backlight Screen 180mm / 7.09 inches Multi-Functional Pen $22.68 View Details
NFTIGB Tuya WiFi 5in1 Water Quality Online Monitor PH Total Dissolved Solids S.G EC Temperature Tester US Plug 110V $55.69 View Details
HK 7 in 1 Professional Digital Versatile Water Tester-TDS/EC/PH/Salt/S.G/OPR/Temperature, with Calibration Buffer Powder $31.99 View Details
TDS Meter, 0-9990 ppm Measuring Range, EC (Conductivity) /TDS (ppm) Multi-Parameter Measurement, Digital Water Tester with ATC, Clear VA Display Screen, for Drinking Water Quality Testing $60.79 View Details
