Dr.meter
PH Meter, Dr.meter Upgraded 0.01 Resolution High Accuracy PH Tester with Backlit Two-Color LCD Display and ATC, 0-14pH Measurement Range with Data Hold Function Digital pH Tester Pen-PH838
Apera Instruments
Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy
kactoily
Kactoily 6-in-1 Soil Moisture Meter for Air Humidity, Soil Temperature, Sunlight, Moisture, Soil Ph Tester, High Accuracy Digital, Soil Test Kit for Gardening, Farming, Indoor and Outdoor Plants
AC INFINITY
AC Infinity Hydroponic Meter PRO Kit, High Precision Digital pH Pen with ±0.01 pH Accuracy and Interchangeable Probe, All-in-One Temp Salinity EC TDS pH Meter, Water Hydroponic Gardens Aquariums Pools
Apera Instruments
Apera Instruments PC60 Premium 5-in-1 Waterproof pH/Conductivity/TDS/Salinity/Temp. Multi-Parameter Pocket Tester, Replaceable Probe
HoneForest
Water Quality Tester, Accurate and Reliable, HoneForest TDS Meter, EC Meter & Temperature Meter 3 in 1, 0-9990ppm, Ideal Water Test Meter for Drinking Water, Aquariums, etc.
ProPOW
9%OFF
TDS Meter,ProPOW Water Quality Tester 3-in-1 TDS/EC/Temperature Meter,Water Testing Kits for Drinking Water,Swimming Pools,Aquariums,Hydroponics, Measure 0-9999 ppm (Yellow)
GAIN EXPRESS
6-in-1 Waterproof pH/ORP/TDS/EC (Conductivity)/Salinity/Temp Meter Pocket Size Multi-Parameter Water Quality Tester Kit Replaceable ORP Probe
Landtek
7 in 1 Water Quality Tester Pen-Type TDS ORP Meter PH Tester for Drinking Water Pools Aquariums hydroponic Cooking Measuring PH/TDS/EC/ORP/Salinity/S.G/Temperature Multi-parameters, ATC Function