Product Overview:
The Milwaukee PH55 Waterproof pH/Temperature Pen Meter is a high-precision, user-friendly, and rugged device designed for professionals and enthusiasts who need fast, accurate readings across a broad pH and temperature range. Ideal for use in laboratories, aquariums, hydroponics, horticulture, pools, brewing, and educational sectors, this tester features Automatic Temperature Compensation (ATC), replaceable probes, and dual-level LCD display for reliable, long-term performance.
Key Features:
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pH & Temperature Measurement: Measures both pH and temperature with built-in ATC.
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High Accuracy: ±0.1 pH / ±0.5°C (±1°F).
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Wide Range: pH from -2.0 to 16.0; Temperature from -5.0°C to 60.0°C.
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Waterproof Rating: IP65 – safe from water splashes and drops.
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Replaceable Probe: Mi56P double junction probe for extended durability.
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Calibration: Automatic 1 or 2 point with two sets of pre-memorized buffers.
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Battery Life: Approx. 300 hours; 4 x 1.5V IEC LR44 batteries included.
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Dual-Level LCD Display: Easy-to-read results and calibration symbols.
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Compact & Lightweight: Weighs only 99.22g (3.5 oz), easy to handle.
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Auto-Off Feature: Automatically turns off after 8 minutes of inactivity.
Technical Specifications:
Parameter | Details |
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pH Range | -2.0 to 16.0 pH |
Temperature Range | -5.0°C to 60.0°C (23°F to 140°F) |
pH Resolution | 0.1 pH |
pH Accuracy | ±0.1 pH |
Temperature Accuracy | ±0.5°C (±1°F) |
EMC Deviation | ±0.1 pH |
EMC Temp. Deviation | ±0.3°C (±0.6°F) |
Temperature Compensation | Automatic (-5°C to 60°C) |
Calibration | Automatic 1 or 2 points with 2 buffer sets |
Buffer Sets | (pH 4.01, 7.01, 10.01) / (pH 4.01, 6.86, 9.18) |
Electrode | Mi56P double junction (replaceable) |
Battery Type | 4 x 1.5V IEC LR44 (A76) – included |
Battery Life | ~300 hours |
Auto-Off | After 8 minutes of non-use |
Operating Environment | -5 to 50°C; Max RH 100% |
Dimensions | 7.9″ x 1.5″ diameter |
Weight | 99.22 g (3.5 oz) |
Usage & Maintenance Tips:
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Always store the meter with cap filled with buffer/storage solution (MA9015).
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Clean regularly using cleaning solution MA9016.
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Re-calibrate after cleaning or prolonged storage.
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Gently stir during measurement for faster and more accurate results.
Recommended Accessory:
✅ Milwaukee pH Maintenance Kit (Code: PH-Main) – Essential for electrode cleaning and conditioning.
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