Accurate direct pH measurements in any substrate in seconds

Reinforced spear-tip for fast, direct measurement in substrates Effective in soil, coco coir blends, rockwool, potting mixes and solution Double-junction probe reduces reference contamination, extending longevity Fast sensor response for quick and accurate measurements Suitable for use with the Bluelab Combo Meter, Bluelab Combo Meter Plus and Bluelab Multimedia pH Meter BNC connector is covered to prevent corrosion