Milwaukee MW605 MAX Waterproof Dissolved Oxygen Meter: Professional Galvanic DO Testing with Data Logging
The Milwaukee MW605 MAX is a professional-grade galvanic dissolved oxygen (DO) meter that delivers lab-level accuracy without the cost or complexity of optical sensors. Featuring ±1.5% accuracy, IP67 waterproof construction, and advanced data logging capabilities, this meter is the trusted choice for aquaculture, fish farming, water treatment plants, environmental monitoring, and laboratory applications.
Key Benefits
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Galvanic Technology: No conditioning time required—ready to measure immediately
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Lab-Level Accuracy: ±1.5% of reading for reliable, professional results
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IP67 Waterproof: Fully submersible, rugged design built for field and lab use
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Advanced Data Logging: Store up to 1,000 samples with on-demand, stability, or interval logging
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USB Connectivity: Easy data export via micro USB for analysis and record-keeping
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Automatic Compensation: ATC for temperature, plus manual altitude and salinity compensation
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10-Foot Cable: Extra-long probe cable for flexibility in tanks, ponds, and field testing
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GLP Compliance: Dedicated GLP key to store and recall system status data
Why Choose the MW605 MAX?
The MW605 MAX is preferred by professionals who need accurate dissolved oxygen measurements without the high cost of optical DO meters. From field biologists and educators to fish farmers, koi pond owners, water treatment plants, and laboratories, the MW605 MAX delivers fast, reliable readings with comprehensive data management. The galvanic probe technology means no warm-up or conditioning time—just calibrate and measure.
What Makes Galvanic Technology Superior?
Unlike polarographic DO probes that require conditioning time, the galvanic probe is ready to measure immediately. The MA860 galvanic probe uses a silver cathode and zinc anode with an oxygen-permeable PTFE membrane, providing fast response times and stable readings without the wait. This makes the MW605 MAX ideal for field work where time and efficiency matter.
Advanced Features
Professional Accuracy:
- ±1.5% of reading ± 1 digit for dissolved oxygen
- ±0.4°C (±0.8°F) temperature accuracy
- 0.0 to 45.00 mg/L (ppm) DO range
- 0.0 to 300.0% saturation range
- 0.01 mg/L (ppm) / 0.1% saturation resolution
- Automatic Temperature Compensation (ATC) from 0-50°C (32-122°F)
Comprehensive Compensation:
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Temperature: Automatic compensation from 0.0 to 50.0°C (32.0 to 122.0°F)
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Altitude: Manual compensation from -500 to 4,000 m (-1,640' to 13,123') with 100 m resolution
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Salinity: Manual compensation from 0 to 40 g/L with 1 g/L resolution
Professional Data Logging:
- Maximum 1,000 log records (stored in up to 100 lots)
- On-demand logging: 200 samples
- Stability logging: 200 samples (auto-log when reading stabilizes)
- Interval logging: 1,000 samples at set time intervals
- USB data export via micro USB port
- GLP data with date and time stamps
Rugged Design:
- IP67 waterproof rating—fully submersible and dustproof
- Large digital LCD display for easy reading
- Lightweight and portable (0.57 lbs / 260 g)
- 200-hour battery life (3 x AA alkaline batteries included)
- Low battery warning
- Auto-off function to preserve battery
MA860 Galvanic Probe Included
The MW605 MAX comes with the MA860 reinforced galvanic dissolved oxygen probe featuring a 10-foot (3-meter) cable for maximum flexibility. This professional-grade probe features:
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Galvanic Technology: No conditioning time—ready to measure immediately
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Silver Cathode: High-quality sensor for accurate, stable readings
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Zinc Anode: Long-lasting electrode design
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PTFE Membrane: Oxygen-permeable polytetrafluoroethylene membrane sensor
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Built-in Thermistor: Integrated temperature sensor for automatic compensation
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10-Foot Cable: Extra length for deep tanks, ponds, and field applications
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DIN 7-Pin Connector: Secure, professional connection
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IP67 Body: PP and ABS construction with waterproof rating
Complete Kit Includes
- MW605 MAX waterproof meter
- MA860 galvanic dissolved oxygen probe with 10-foot cable
- 2 spare O-rings (MA861 membranes)
- 1 protective cap
- Electrolyte solution MA9072S (30 mL)
- 3 x AA alkaline batteries
- Micro USB cable for data download
- Instruction manual
Technical Specifications
Dissolved Oxygen Specifications:
- Range: 0.0 to 45.00 mg/L (ppm)
- Range: 0.0 to 300.0% saturation
- Resolution: 0.01 mg/L (ppm) / 0.1% saturation
- Accuracy: ±1.5% of reading ± 1 digit
- Calibration: One or two % saturation calibration points at 0% (MA9070 zero oxygen solution) and 100% (water-saturated air)
Temperature Specifications:
- Range (Meter): -20.0 to 120.0°C (-4.0 to 248.0°F)
- Range (Probe): 0.0 to 50.0°C (32.0 to 122.0°F)
- Resolution: 0.1°C (0.1°F)
- Accuracy: ±0.4°C (±0.8°F)
- Compensation: Automatic from 0.0 to 50.0°C (32.0 to 122.0°F)
Compensation Features:
- Altitude: -500 to 4,000 m (-1,640' to 13,123') with 100 m (328') resolution
- Salinity: 0 to 40 g/L with 1 g/L resolution
Data Logging:
- Maximum: 1,000 log records (up to 100 lots)
- On-demand: 200 logs
- On-stability: 200 logs
- Interval: 1,000 logs
- PC Connectivity: Micro USB port
General Specifications:
- Battery: 3 x 1.5V AA alkaline (included)
- Battery Life: Approx. 200 hours
- Environment: 0-50°C / 32-122°F; max RH 95%
- Dimensions (Meter): 8 x 3.3 x 2.0 inches (200 x 85 x 50 mm)
- Weight (Meter): 0.57 lbs (260 g)
- Casing: IP67 waterproof and dustproof
- Probe Cable: 10 feet (3 meters)
Applications
- Aquaculture and fish farming
- Koi pond management
- Water treatment plants
- Wastewater treatment facilities
- Environmental monitoring and field biology
- Laboratory research and testing
- Aquarium maintenance (freshwater and marine)
- Stream and river water quality assessment
- Hydroponics and aquaponics systems
- Educational institutions and research
- Brewery and fermentation monitoring
Care & Maintenance
Proper maintenance of the galvanic probe ensures accurate, stable measurements and extends probe life.
Probe Maintenance:
- The silver cathode should always be bright and untarnished
- If tarnished or stained, clean the cathode gently with a lint-free cloth
- Rinse the probe with deionized or distilled water after each use
- Replace the membrane cap using fresh electrolyte solution
- Recalibrate meter after membrane replacement
Membrane Maintenance:
- Perfect membrane condition is essential for accurate, stable measurements
- Protect the thin membrane from scratches, abrasion, or contact with solids
- If not measuring for a few hours, protect membrane with the plastic protective cap
- If fouled, rinse carefully with distilled or deionized water
- If damaged, replace the membrane cap immediately
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Change membrane every 8 weeks or more frequently in fouling environments
- Check and replace electrolyte fill solution every 4 weeks
Storage:
Short-term storage:
- Switch meter off and clean probe before storage
- Store probe with plastic cap on
- Can also store in beaker of deionized water with protective cap removed
Long-term storage (dry storage):
- Disconnect probe from meter
- Unscrew membrane cap
- Remove any electrolyte solution from cap
- Rinse probe anode/cathode assembly with distilled water and blot dry
- Screw membrane cap onto probe until hand tight
Calibration
The MW605 MAX offers simple 1 or 2-point % saturation calibration:
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100% Calibration: Water-saturated air (standard method)
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0% Calibration: Zero oxygen solution (MA9070) for enhanced accuracy
- Automatic temperature compensation during calibration
- GLP function stores calibration data with date and time
Why Milwaukee Instruments?
Milwaukee Instruments is trusted worldwide by aquaculture professionals, water treatment facilities, environmental scientists, and laboratories for rugged, reliable testing equipment. The MW605 MAX combines Milwaukee's legendary build quality with proven galvanic DO technology and advanced data logging—backed by exceptional customer service and decades of proven performance in the most demanding applications.
Professional dissolved oxygen testing made simple: Get lab-quality DO measurements with galvanic technology that's ready when you are, plus comprehensive logging and USB connectivity for complete documentation.
