Milwaukee MW803 MAX Waterproof 4-in-1 pH/EC/TDS/Temp Tester – Low Range

All-in-One Accuracy: pH, EC, TDS & Temperature in One Waterproof Tester

Designed with professional growers in mind, the Milwaukee MW803 MAX Waterproof 4-in-1 Tester is your compact, lightweight solution for testing pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Temperature in one easy-to-use tool. Whether you're managing a hydroponic system, aquaponics, or irrigation, the MW803 ensures accurate, fast, and reliable readings in all low-range applications.

With automatic temperature compensation, dual-level LCD display, and a replaceable double-junction pH probe, this tester delivers precise measurements and long-lasting durability. The waterproof IP65-rated casing protects your device even in the messiest grow environments, while the intuitive interface simplifies calibration and operation.

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Key Features:

• 4-in-1 Testing: Simultaneously measure pH, EC, TDS, and temperature

• Measurement Ranges:

  • pH: 0.00–14.00

  • EC: 0–3999 µS/cm

  • TDS: 0–2000 ppm

  • Temperature: 32.0–122.0°F (0.0–50.0°C)

• Accuracy: ±0.05 pH, EC/TDS ±2% F.S., Temp ±0.5°C

• Dual LCD Display with backlight and stability indicator

• Automatic Calibration: One or two points with 5 memorized calibration values

• Replaceable pH Electrode (Mi60P) with exposed temperature sensor

• Compact and Lightweight: Weighs only 3.5 oz

• Battery Life: 100+ hours of continuous use (batteries included)

• Fully Waterproof (IP65 Rated)

• Auto Shut-off After 8 Minutes of Inactivity

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Care & Maintenance Tips:

• Always store pH probe in MA9015 storage solution

• Clean regularly using MA9016 cleaning solution

• Calibrate after cleaning and before each testing session

• Avoid storing in distilled or RO water

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Includes:

• MW803 MAX Tester

• Pre-installed batteries

• Replaceable pH electrode

• Milwaukee MW803 User Manual