Bluelab Soil pH Meter

pH measurement taken from a reservoir alone doesn't always reflect what's actually happening at the root. Different growing media, soil, coco coir, rockwool, and potting mix all interact with pH differently, and accurate readings often require direct measurement in the medium itself rather than relying on solution readings alone. The Bluelab Soil pH Meter is built for exactly this, delivering fast, accurate pH readings of 0.1 resolution across hydroponic solution, soil, coco, rockwool, and potting mix from a single handheld unit.

The toughened spear-tip probe is designed for direct insertion into growing media, allowing genuine root-zone pH measurement rather than an indirect estimate. Calibration is a simple two-point process using a single push button and fresh calibration solution, with a 30-day reminder displayed on screen so accuracy is maintained over time rather than drifting unnoticed. A KCl-filled probe cap keeps the probe hydrated between uses, and a 2 metre cable allows readings to be taken in hard-to-reach locations across a growing area.

Because pH directly governs which nutrient elements are available for uptake, accurate root-zone measurement is one of the most useful diagnostic tools available for catching deficiency issues before they become visible above ground. Backed by a 5-year warranty, 6 months on the pH probe. Powered by 2x AAA batteries.