
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

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

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 AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy

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

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

Milwaukee Instruments
50%OFF
Milwaukee Instruments MW102 Ph and Temperature Meter

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