Milwaukee Instruments PH55 PRO Waterproof pH & Temperature Tester with ATC & Replaceable Probe

Description

Unlock superior accuracy and reliability with the Milwaukee Waterproof pH55 PRO pH/Temperature Tester. This professional-grade tester is engineered for precision, simplicity, and durability—delivering fast, trustworthy results across a range of applications, including aquariums, hydroponics, horticulture, pools, and home brewing. The intuitive dual-level LCD and automatic calibration make pH and temperature readings effortless, ensuring you never second-guess your measurements.

Designed for enthusiasts and professionals alike, the pH55 PRO offers extended pH measurement range, a lightweight yet rugged waterproof build (IP65), and a replaceable double-junction pH probe for long-lasting performance. Automatic temperature compensation (ATC) and simple one or two-point calibration let you achieve consistent accuracy in any environment, whether you’re testing nutrient solutions, water quality, or educational samples.

Accuracy

Obtain pinpoint pH and temperature readings with accuracy to ±0.1 pH and ±0.5°C (±1°F). Milwaukee’s digital LCD makes results easy to read, eliminating the uncertainty of test strips. Rapid two-point automatic calibration ensures top performance comparable to premium meters.

Long Life

The double junction, gel-filled probe resists contamination and is designed for extended use. Easy probe replacement means lasting value even in demanding environments.

Fast Response

Get quick, stable pH readings—no waiting for results. The pH55 PRO delivers efficient, accurate measurements every time.

Waterproof & Lightweight

Fully waterproof (IP65) and weighing just 3.5 ounces, this tester is ideal for fieldwork or laboratory projects. Its ergonomic, streamlined design is perfect for frequent use and portability.

Ease of Use

Large dual-level LCD with intuitive symbols streamlines calibration and measurements, making professional pH and temperature testing accessible for all users. The simplified workflow is perfect for anyone demanding precision without hassle.

Design Features

• Fast, easy-to-read large digital LCD.
• High pH accuracy to ±0.1 pH with extended range (-2.0 to 16.0 pH).
• 0.1 pH resolution.
• Lightweight, portable construction.
• Direct sample measurement with stability indicator and reading freeze function.
• Automatic Temperature Compensation (ATC) for precise results.
• One or two-point automatic calibration.
• Dual sets of memorized buffers (pH 4.01/7.01/10.01 and 4.01/6.86/9.18).
• Gel-filled, low-maintenance, double junction electrode for superior performance.
• Over 300 hours of battery life (batteries included).
• Fully waterproof to IP65 standards.
• Replaceable pH electrode (model Mi56P) for extended service life.

Care and Use

Maximize accuracy and sensor lifespan by following simple care steps. Always store your pH probe in MA9015 storage solution (never DI or RO water). Regular cleaning and calibrating maintain top performance. Pick up the Milwaukee PH-Main Maintenance Kit to prepare your tester for use and preserve long-term function.

Top Care Tips:

1. Store tester upright with cap full of MA9015 storage solution for best results.
2. Clean probe regularly with cleaning solution MA9016 for about 20 minutes.
3. Calibrate after cleaning or extended storage to ensure reliable results.
4. Gently stir during measurement for faster, more consistent results.

Choose the Milwaukee pH55 PRO for robust, accurate, and effortless pH and temperature testing—trusted by professionals and passionate hobbyists worldwide.