Aqua Master Tools P160 Pro Combo Pen

Needing an exact 25°C calibration solution before you can trust your meter is a hassle most growers don't have time for. The Aqua Master Tools P160 Pro solves that with an analogue EC calibration function that works regardless of solution temperature, plus a 2-point auto pH calibration. For growers who need constant monitoring rather than a handheld, the P700 Pro 2 Combo Meter is an excellent wall-mounted alternative, while those working with soil should look at the S300 Pro 2 Substrate pH/Temp meter.

As the premium model in the lineup, the P160 Pro 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, so an accidental drop into a tank costs you nothing.

An ergonomic rubber back and secured cap cord make it comfortable to hold, and a replaceable electrode extends the pen's usable life well beyond a standard meter. It ships ready to use, batteries included.

For long-term accuracy, store the meter upright with KCl storage solution in the protective cover.