Bluelab PH Replacement Probe tds pen Our proprietary pH Perfect® Technology

Our proprietary pH Perfect® Technology automatically stabilizes your pH in its sweet spot regardless of the alkalinity or acidity of your input water

most mineral nutrients are readily available to plants when soil pH is near neutral

Increasing essential oils for higher potency

Only spreader to maximize absorption to the plants Mesophyll Layer

Bluelab PH Replacement Probe tds pen Our proprietary pH Perfect® TechnologyThe durable Bluelab PH Replacement Probe has been designed with longevity in mind, with a double junction probe, polycarbonate housing and high quality electrical components. Created with advanced and affordable technology, you can rely on Bluelabs pH Probe to give you accurate and fast measurements every single time. Product Features Benefits Double junction probe reduces reference contamination, extending longevity Fully waterproof not just water