Milwaukee PH55 PRO Waterproof pH & Temperature Tester

The Milwaukee PH55 PRO Waterproof pH & Temperature Tester delivers fast, accurate pH and temperature measurements in a portable, rugged design. This tester is ideal for a wide range of applications including aquariums, hydroponics, pools, lab use, and water quality testing. With automatic temperature compensation (ATC) and a replaceable probe, the Milwaukee PH55 PRO Waterproof pH & Temperature Tester ensures reliable measurements and long-term performance.

Key Features

• Extended pH range: –2.0 to 16.0 pH with 0.1 resolution

• Accurate readings: ±0.1 pH and ±0.5 °C temperature accuracy

• Automatic calibration: 1 or 2-point with two sets of memorized buffer solutions

• Waterproof design: IP65 rated for wet environments

• Replaceable double-junction probe: Long life and fast response (Mi56P)

• Dual LCD display: Simultaneously shows pH and temperature

• Lightweight & portable: Approx. 3.5 oz (99 g) body with long battery life

How It Works

With automatic temperature compensation (ATC), the meter adjusts for temperature changes so you get accurate readings no matter the conditions. Its simple one or two-point automatic calibration using standard buffer sets makes maintenance easy, while the replaceable probe ensures long-term usability.

Moreover, the large dual LCD screen makes it easy to read both pH and temperature simultaneously without guessing or manual charts.

Applications

The Milwaukee PH55 PRO Waterproof pH & Temperature Tester is suited for:

• Water and wastewater analysis

• Aquariums and fish tanks

• Hydroponics and horticulture

• Swimming pools and spas

• Environmental monitoring

• Educational and laboratory settings

Because of its high accuracy, rugged build, and fast response, it’s a trusted choice for both professionals and hobbyists alike.