Aqua Master Tools P160 Pro 2 Combo Pen

Squinting at a dim display or waiting for calibration solution to hit an exact temperature are two things a professional-grade meter shouldn't ask of you. The Aqua Master Tools P160 Pro 2 fixes both: a black display with white characters makes readings easy to read at a glance, and a digital manual EC calibration works with any EC calibration fluid regardless of temperature, since it isn't temperature-dependent.

This upgraded Combo Pen builds on the original P160 Pro with AAA batteries in place of button cells, selectable 1 or 2 decimal precision, and a calibration reminder that triggers after 30 days so accuracy never quietly drifts. It measures pH, EC, TDS, PPM, and temperature, with 2-point automatic pH calibration for consistent accuracy.

As the premium model in the lineup, the P160 Pro 2 ships in a robust carrying case complete with pH 4.01, pH 7.00, and EC 1413 calibration solutions, so you're ready to calibrate right out of the box. A dry storage electrode means you don't need to keep it soaking in liquid between uses, and it's IP67 waterproof and buoyant enough to float in challenging environments. An ergonomic rubber back and secured cap cord keep it comfortable to hold, and a replaceable electrode extends the pen's usable life.

Dried salts around the pH electrode are normal and not a sign of a problem. Before first use, soak the electrode in tap water for at least 12 hours to dissolve any salts and properly activate it.