Bluelab Soil pH Pen

Know what's going on at the root zone. Measures soil pH and temperature foroptimal plant health. The Bluelab Soil pH Pen simplifies soil pH testing. It measures pH and temperature directly in soil, coco coir, rockwool, or nutrient solutions, eliminating the need for messy soil slurries. This handheld device ensures accurate readings for optimal plant health.  Features: Robust, dual-purpose storage cap/dibber to take measurements directly from the root zone Compact handheld design for convenient use Bright, easy-to-read backlit display Double-junction pH probe for accurate measurements Simple 2-point pH calibration with a 30-day reminder KCl-filled storage cap/dibber keeps the pH probe hydrated Waterproof design allows easy switching between soil and nutrient solution