GroStar™ Premium Pen Testers are designed specifically for the horticultural market. GroStar's intelligent design reduces the guesswork so you can easily manage your crops success.

GroStar™ GS2 Soil pH Pen Tester

• Measures pH and temperature in nutrient solution, soil, coco coir, rockwool, and many other media types

• Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance
• Impact-resistant spear glass tip, 10 times stronger than conventional glass bulb
• PTFE ring prevents a clogged junction caused by soil particles, significantly increases durability
• Backed by GroStar proprietary sensor technology from Switzerland
• Easy-to-use design and fast calibration adjustment
• Replaceable Swiss LabSen Spear Soil pH Probe
• Large 3-color backlit screen gives you clear information
• Durable structure, IP67 waterproof rating
• Powered by AAA batteries with auto off function
• Automatic temperature compensation