Bluelab Truncheon Nutrient Meter for Plant Germination & pH Pen - The Ultimate Handy Solution for Measuring pH and Temperature - PENPH

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Quickly monitor your nutrient level to maximize your grow and ensure plants get the balanced feed they need
Measures (tds) EC, ppm 500, ppm 700 and CF with with automatic temperature adjustments; no calibration required (comes factory calibrated)
Fully waterproof and great for mixing a reservoir while measuring nutrients
Other features: auto off function, no buttons or switches INCLUDES: AA batteries
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 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