Bluelab Soil pH MeterThe pH level of soils or substrates strongly influences crop performance. Do you know what the pH of your soil is? Soil pH measuring made simple! If you need to measure the pH level of soil, media or substrates, then the Bluelab Soil pH Meter is just what you need. This hand held meter comes with a Soil pH Probe, Dibber Auger, pH 4. 0 and pH 7. 0 calibration solutions, plus a helpful Quick Start guide. The Bluelab Soil pH Meter can be used by