Bluelab® pH Pen, Digital pH Tester & Hand Held Temperature Meter

Bluelab pH Pen - Digital pH Tester - Reliable & Accurate for High Yield Crops - Hand-Held Meter - Measures pH & Temperature in Solutions and Soil Solutions - Optimize Plant Health & Performance, White The Bluelab pH Pen is a user-friendly and hardy handheld pen will take measurements in increments of 0.1 pH and is fully temperature compensated, so you can expect accurate readings every time. About this item A hardy, compact pH and temperature pen that: Measures pH in nutrient solution (acid or alkaline) for precise up and down adjustment with lab quality glass probe; General uses include growing tent, swimming pool, drinking water, aquarium, fish tank, and brewing. Operating temperature : 0 - 50 °C, 32 - 122 °F. This hydroponics tester has ATC that provides consistent reading regardless of any fluctuations in temperature; Calibration reminder; Durable design for repeated uses; Fully waterproof and floats in solutions Double junction electrode has a longer lifespan compare