Milwaukee MW802 PRO 3-in-1 Combo Meter: Professional pH, EC & TDS Testing
The Milwaukee MW802 PRO is a professional-grade combo meter designed specifically for growers who demand precision. Measure pH, electrical conductivity (EC), and total dissolved solids (TDS) with a single integrated probe. Built for hydroponics, aquaponics, and greenhouse operations, this meter delivers lab-quality accuracy in a rugged, portable package.
Key Benefits
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3-in-1 Professional Testing: Measure pH, EC, and TDS with one meter and one probe—no juggling multiple devices
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Grower-Focused Accuracy: ±0.2 pH accuracy ensures precise nutrient management and optimal plant health
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Automatic Temperature Compensation (ATC): Built-in correction for consistent readings across temperature ranges (0-50°C)
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High-Range EC/TDS: 0-6 mS/cm EC and 0-4000 ppm TDS for concentrated nutrient solutions
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Replaceable SE600 Probe: Fiber junction design resists fertilizer contamination, extends probe life
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Simple Calibration: Easy single-point manual calibration for both pH and EC
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Rugged & Portable: Lightweight (5.8 oz) with large, easy-to-read display
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Auto-Off Function: 8-minute auto-off conserves battery for 150 hours of use
Why pH & EC Matter for Growers
pH and conductivity are critical parameters for successful growing operations. pH directly affects nutrient and water uptake—when pH is out of range, it reduces the efficiency of fertilizers, herbicides, and pesticides, even if nutrients are present. Managing conductivity (EC) helps growers pinpoint fertilizer needs, prevent nutrient burn, and avoid deficiencies. The MW802 PRO gives you precise control over both parameters with professional accuracy.
What Customers Say
"Superb meter, easy to use, great customer service."
"Best meter I have ever owned."
"I have owned this meter for almost 8 years and only replaced the probe once. The calibration knobs are easy to use, and even when I am less than gentle with the thing it keeps on going. I wouldn't consider any other meter."
"The best meter on the market and Milwaukee customer service is the best."
Design Features
The MW802 PRO is engineered for simple operation and ruggedness. With a single probe, large screen, and easy calibration, this meter is exceptionally simple to operate. The tough meter build and rugged but replaceable probe mean you can expect years of reliable use.
The Milwaukee MW802 PRO offers:
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3-in-1 Testing: pH, conductivity/nutrient EC, and TDS (ppm) with automatic temperature compensation
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SE600 Integrated Probe: Replaceable combination pH/EC/TDS probe with single 3-foot cable for easy use
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Fiber Junction Design: Reduces contamination when measuring fertilizer solutions
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Portable Form Factor: Lightweight at just 5.8 ounces with battery, just over 3 inches wide
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Large Display: Easy-to-read screen for quick readings
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Factory Calibrated: Simple single-point manual calibration for both pH and EC
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Proven Reliability: Reputation for rugged build and long life
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Grower-Optimized: Specialized design for hydroponic, aquaponic, and greenhouse applications
Technical Specifications
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pH Range: 0.00 to 14.00 pH | Resolution: 0.1 pH | Accuracy: ±0.2 pH
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EC Range: 0.00 to 6.00 mS/cm | Resolution: 0.01 mS/cm | Accuracy: ±2% FS
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TDS Range: 0 to 4000 ppm | Resolution: 10 ppm | Accuracy: ±2% FS
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Temperature Compensation: Automatic, 0-50°C (32-122°F)
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Probe: SE600 combination pH/EC/TDS probe with 3-foot cable
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Calibration: Manual 1-point for pH & EC
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Calibration Solutions: M10007 (pH 7.01), M10032 (1382 ppm), M10442B (1500 ppm)
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Conversion Factor: 0.68 (optimized for nutrient solutions)
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Battery: 1 x 9V alkaline (150 hours life)
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Auto-off: After 8 minutes of non-use
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Environment: 0-50°C / 32-122°F; max RH 95%
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Dimensions: 7.3 x 3.2 x 1.8 inches (185 x 82 x 45 mm)
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Weight: 5.8 oz with battery (164 g)
Applications
- Hydroponic nutrient solution management
- Greenhouse growing operations
- Aquaponics systems
- Commercial agriculture
- Cannabis cultivation
- Research and laboratory testing
- Water quality monitoring
- Fertilizer mixing and management
What's Included
- MW802 PRO meter
- SE600 combination pH/EC/TDS probe
- 9V battery
- Calibration solutions: M10007 (pH 7.01), M10032 (1382 ppm), M10442B (1500 ppm)
- Instruction manual
Care & Maintenance
The SE600 probe includes both pH and EC sensors. pH sensors have a limited lifespan and require proper maintenance for optimal performance. EC sensors are more robust but can still be affected by residue buildup. Both need regular maintenance for fast, accurate results.
Top Four Maintenance Tips:
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Storage: Always store with cap full of buffer or storage solution MA9015 (never water)
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Cleaning: Soak probe regularly in cleaning solution MA9016 to remove fertilizer residue
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Calibration: Calibrate after cleaning and storage before testing to adjust for sensor changes
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Testing Technique: Gently stir probe in sample for faster, more accurate results
Recommended: Order the Milwaukee pH Maintenance Kit (code PH-Main) at checkout to clean and condition your pH/EC electrode before use and maintain peak performance.
Why Milwaukee Instruments?
Milwaukee Instruments is trusted worldwide by professional growers and laboratories for rugged, reliable water testing equipment. The MW802 PRO combines Milwaukee's reputation for exceptional build quality, long-term reliability, and outstanding customer service—backed by years of proven performance in demanding growing environments.
Professional-grade testing made simple: Get lab-quality accuracy with the ease of use growers demand, backed by Milwaukee's legendary durability and support.
