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

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 compared to standard probes due to less contamination and is more accurate and reliable than comparable pens, test strips, drops, and more
Combine with ppm meters for full indoor garden nutrients monitoring in water and soil;
Fully waterproof – not just water resistant; Automatic temperature compensation for accurate readings everywhere
Other features: Auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery, lanyard, and calibration solution
IF PROBE IS DRY, SOAK IN KCL SOLUTION FOR 24 HOURS, KCL SOLUTION IS SOLD SEPARATELY; Made in New Zealand, and manufactured by Bluelab, the industry leader in hydroponic testing equipment; 1-Year Limited Warranty with proof of purchase