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AI31020 – GroStar GS2 SoilPH/TEMP (2-IN-1)PenLab grade instruments designed specifically for growers!Includes: 2-year warranty (instrument) 1-year warranty Swiss made (probe) pH 7 & pH 4 solution (50ml bottles of each) KCL soaking solution (10ml bottle) Cleaning brush Hole dibber Lanyard and user manualFeatures: 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