BLUELAB PH PEN

A compact and robust user-friendly handheld pen which takes measurements in increments of 0.1 pH and is fully temperature compensated to ensure accurate readings every time. Fully waterproof rather than merely water-resistant, the  Bluelab pH Pen is designed to float if dropped into a reservoir. Temperature display in °C or °F selectable.

Hold function keeps the pH reading on screen for as long as required. Easy to calibrate, and calibration check mark reminds the user when recalibration is due. Powered by 1 x AAA alkaline battery (included, 350 hrs life), with power-saving auto shut-down after 4 minutes unused.