Testers

GroLine testers are convenient and inexpensive ways to measure pH, conductivity (EC) or Total Dissolved Solids (TDS). Our selection of handheld meters includes basic pH and EC/TDS meters that can be used with nutrient solutions and soil slurries. We also offer testers for the direct measurement of pH and for EC/TDS with specialized probes that can be used with soils, rockwool, and other growing mediums without the need to make a slurry.

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