The Bluelab® Combo Meter Plus is an all-in-one, convenient portable solution for accurate measurement of pH, conductivity and temperature in nutrient solution. The battery-powered, lightweight unit can be used anywhere, anytime to measure critical parameters related to nutrient uptake in plants. The Bluelab® Leap pH probe also allows fast and accurate pH measurements direct from the root zone in a wide range of growing media including soil, rockwool, coco coir and potting mixes. No more pH slurries or extraction mixes! The detachable Leap pH probe has a toughened spear-tip for improved durability and is lightning fast in nutrient solution. Easy-to-read backlit screen for lowlight environments and simple push button operation to view your chosen parameter. Probe cable length is 2 m/6.5 ft.