Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration, Double Junction Probe for Improved Accuracy and Durability

• Measures pH in solution for acid or alkaline conditions to make precise up and down adjustments with lab-quality glass probe used for the pool, drinking water, hydroponics, brewing, and growing
• EASY two-point calibration and auto temperature compensation makes this digital meter a handy tool with a backlit LCD display and calibration reminders
• Double junction probe improves accuracy, reliability, and probe lifespan compared to regular probes, more accurate than comparable pens, test strips, and other testing methods
• Other features: auto-off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery, lanyard, and calibration solution
• Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment; 1 Year Limited Warranty with proof of purchase