Digital pH Pen Meter - pH Tester
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6 month in store warranty
Free Shipping over $99
Simple low cost PH meter. Perfect for hydroponic hobbyists. This PH meter is the same as what many are selling on Amazon but purchasing from Astral Grow you get our satisfaction guarantee and in store warranty.
Manually calibrate by mixing calibration powder with distilled water then turning the small small screw with the included screw driver until reading is accurate. Calibration is recommended before using.