Replacement Sensor fir pH Meter Milwaukee PH55
The Milwaukee PH55 is a professional waterproof pH and temperature tester designed for users who require high accuracy, durability, and long-term reliability. It is an ideal solution for hydroponics, aquariums, pools, laboratories, water treatment applications, and any environment where precise pH monitoring is essential.
The PH55 offers a wide pH measurement range from -2.0 to 16.0, with an accuracy of ±0.1 pH, ensuring consistent and dependable readings even in demanding conditions. At the same time, it measures temperature from -5 to 60°C, providing complete environmental insight in a single compact device. Thanks to Automatic Temperature Compensation (ATC), pH readings remain accurate regardless of temperature fluctuations, eliminating manual adjustments.
One of the key advantages of the Milwaukee PH55 is its replaceable double-junction pH probe (Mi56P). Unlike disposable testers, this design significantly extends the instrument’s lifespan and reduces long-term costs, making it a smart investment for professional and frequent users.
Calibration is automatic and simple, supporting one- or two-point calibration with pre-memorized buffer sets (pH 4.01, 7.01, 10.01 or pH 4.01, 6.86, 9.18). This ensures fast setup and reliable accuracy, even for users without advanced technical experience.
Built with a fully waterproof housing, the PH55 is suitable for harsh and wet environments and can operate at up to 100% relative humidity. Its ergonomic design, lightweight construction (191 g), and compact dimensions make it comfortable to use both in the field and on the bench.
The tester is powered by four LR44 batteries, delivering approximately 300 hours of continuous use, while the auto shut-off function after 8 minutes of inactivity helps conserve battery life. For optimal performance and extended probe life, regular cleaning, proper storage in electrode solution, and periodic calibration are recommended.
The Milwaukee PH55 combines precision, robustness, and ease of use, making it a reliable tool for anyone who demands accurate pH and temperature measurements day after day.
Technical Specifications:
- pH range: -2.0 to 16.0 pH
- pH resolution: 0.1 pH
- pH accuracy: ±0.1 pH
- Temperature range: -5.0 to 60.0 °C
- Temperature accuracy: ±0.5 °C
- Typical EMC deviation (pH): ±0.1
- Typical EMC temperature deviation: ±0.3 °C
- Temperature compensation: Automatic (ATC) from -5 to 60 °C
- Calibration: Automatic 1 or 2 point calibration
- Calibration buffers: pH 4.01, 7.01, 10.01 or pH 4.01, 6.86, 9.18
- Probe: Replaceable double junction probe (Mi56P)
- Operating conditions: -5 to 50 °C, up to 100% RH
- Power supply: 4 × 1.5 V LR44 batteries (included)
- Battery life: Approx. 300 hours
- Auto shut-off: After 8 minutes of inactivity
- Dimensions: 254 × 67 × 47 mm
- Weight: 191 g
- Construction: Waterproof










