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