
$77.90
See if it's really the one
Search with this product to compare it, find similar styles, or turn up something better before deciding.
Milwaukee PH55 PRO Waterproof pH & Temperature Tester with ATC & Replaceable Probe Reliable pH & Temperature Testing for Multiple Applications The Milwaukee PH55 PRO is a professional-grade waterproof pH and temperature tester designed for accuracy, durability, and ease of use. With an extended pH range of -2.0 to 16.0 and dual-level LCD readouts, this tester is ideal for hydroponics, horticulture, aquariums, pools, brewing, education, and more. Featuring automatic 1 or 2-point calibration with two pre-memorized buffer sets, it ensures fast, precise readings every time. The replaceable double-junction probe provides long life and quick response, while the IP65-rated waterproof design offers peace of mind in wet environments. Lightweight and portable at just 3.5 oz, it’s easy to handle during regular testing. Key Features: pH Range: -2.0 to 16.0 | Accuracy: ±0.1 pH | Resolution: 0.1 pH Automatic 1 or 2-point calibration with two buffer sets (pH 4.01/7.01/10.01 or 4.01/6.86/9.18) Waterproof to IP65 with lightweight 3.5 oz design Replaceable double-junction pH electrode (Mi56P) for long life and fast response Large dual-level LCD for pH and temperature readings (±0.5°C / ±1°F accuracy) Over 300 hours of battery life (batteries included) Ideal for use in soil, hydroponics, aquariums, pools, brewing, and more Care & Maintenance Tips: Store upright with the cap full of MA9015 Storage Solution. Clean regularly with MA9016 Cleaning Solution (20 min soak). Calibrate after cleaning or storage before use. Avoid storing in distilled or RO water to prevent probe damage. Milwaukee PH55 User Manual
Have a question about this?
We currently ship within the US, with more countries coming soon.
Final cost and dates are confirmed at checkout.
🇺🇸 Ship from USA · On Agora since 2026
$77.90