Apera Instruments
Apera Instruments PC60 Premium 5-in-1 Waterproof pH/Conductivity/TDS/Salinity/Temp. Multi-Parameter Pocket Tester, Replaceable Probe
Apera Instruments
Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit
GuDoQi
GuDoQi PH Meter, TDS Meter Combo, Pool Water Test Kit, PH Tester Digital, PPM Meter, 0.01 Resolution TDS PH EC Temperature 4 in 1 Set for Drinking Water, Hydroponics, RO System, Aquarium, Swimming
bluelab
Bluelab PENSOILPH Soil pH Pen and Digital Meter for Soil, Water, Coco, and Rockwool with Easy Calibration, pH Test Kit for Hydroponic System and Indoor Plant Grow
GuDoQi
GuDoQi Digital PH Meter, 5 in 1 Water Quality Tester with Backlight, PH/TDS/EC/Salinity/Temp Meter with ATC, 0.01 Resolution High Accuracy Pen Type Tester, for Aquarium, Spas, Drinking Water
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
bluelab
Bluelab METCOMPLUS Combo Meter Plus for pH, Temperature, and Conductivity in Water and Soil with Easy Calibration, Digital Nutrient (TDS) Testing Kit for Hydroponic System and Indoor Plant Grow
YINMIK
11%OFF
YINMIK PH Meter, Digital 4 in 1 PH EC TDS Temp Meter for Water Hydroponics, Waterproof DWC PH and EC PPM Water Tester with Backlit for Nutrients Growing, Indoor Plants, Home Brewing, Pool, Aquarium
Apera Instruments
Apera Instruments AI223 SX620 pH Pen Tester Kit with 0.01 pH Accuracy, 3-Point Auto. Calibration ATC 60 Degree C, Plastic; Glass