How to calibrate digital pen?

Excluding first use, YOU MUST CLEAN the probe before calibrating. Hydrate the probe before first use and after cleaning. After hydration, rinse probe in fresh water and place in pH 7.0 solution. Wait for the reading to stabilize. Press the cal button until CAL is displayed

Can I use any known pH solution for calibration? How do I order new calibration packets/solutions?

Yes Any ph solution is good. I like this tester because ir is easy yo use. Turn it on, dip it into the water to be tested, Instant reading. Good easy tester.

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🌟 Elevate Your Testing Game with Precision and Ease!

SMART FEATURES - Auto shut-off and temperature compensation for hassle-free use.
SUPER VALUE PACK - Includes 3 essential testers for all your pH needs.
PRECISION TESTING - Achieve accurate readings with ±0.01 pH precision.
USER FRIENDLY DESIGN - Simply press 'ON' for instant results—no batteries needed!
VERSATILE APPLICATIONS - Perfect for water, soil, and hydroponics testing.

This PH Meter, TDS PPM Meter, and Soil PH Tester kit includes three essential tools for accurate pH and TDS testing. With features like auto temperature compensation, easy-to-read displays, and no battery requirement, this kit is perfect for professionals and gardening enthusiasts alike. Ideal for a variety of applications, from drinking water to soil health, it ensures you stay informed and in control.

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