The Bluelab Combo Meter with Leap pH probe is a portable, all-in-one solution for accurately measuring pH, conductivity, and temperature in nutrient solutions. The Bluelab Leap pH probe allows for fast and precise pH measurements directly in the root zone, covering a wide range of growing substrates such as soil, Rockwool, coco coir, and potting mixes, eliminating the need for slurries or extractions. This lightweight, battery-powered unit can be used to measure critical parameters anywhere, at any time.