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Designed to fit in standard test tubes 16mm x 50mm or larger, this pH pen provides highly stable, accurate readings on a large LCD display. The pen automatically calibrates to pH 4, 7, and 10 buffers and can also be adjusted to recognize other non-standard buffers. Features include °F/°C temperature display, automatic temperature compensation, hold function, auto power off, and low battery indicator. IP65 waterproof. Includes 2 button-cell batteries and a built-in electrode kept moist with a protective cap and solution. One-year manufacturer’s warranty.
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