
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

Apera Instruments
Apera Instruments PC60 Premium 5-in-1 Waterproof pH/Conductivity/TDS/Salinity/Temp. Multi-Parameter Pocket Tester, Replaceable 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

bluelab
Bluelab PENPH pH Pen, Digital Meter for Water with Easy Two Point Calibration and Double Junction Probe, Test Kit for Hydroponic System and Indoor Plant Grow, White

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

Milwaukee
Milwaukee MC110 pH Monitor with Mounting Kit, 0.0 to 14.0 pH, -0.2 pH Accuracy, 3.5 to 7.5 pH Set Point

Apera Instruments
Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit

Apera Instruments
Apera Instruments AI3713 PH60S-Z Smart Spear pH Tester for Food and Solid Sampling pH Measurement

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