✅ This item is normally regularly stocked. Shipping times may vary depending on availability. Please contact us to confirm stock and shipping times. You will receive tracking details once the item has shipped.
Description
Milwaukee MW105 MAX Waterproof pH/ORP/Temperature Portable Meter
The Milwaukee MW105 MAX Waterproof pH/ORP/Temperature Meter is a professional-grade, portable testing instrument designed for fast, highly accurate measurement of pH, oxidation-reduction potential (ORP), and temperature. Featuring IP67 waterproof protection, automatic temperature compensation (ATC), up to three-point calibration, and a rugged field-ready design, the MW105 delivers laboratory-grade performance in demanding industrial and field environments.
Built for professionals who require dependable results, the MW105 is ideal for water treatment, wastewater, hydroponics, agriculture, breweries, wineries, food processing, laboratories, aquaculture, and environmental monitoring. The included MA906BR/1 amplified double-junction pH/temperature probe provides excellent performance in difficult or viscous samples while minimizing maintenance requirements.
With ±0.02 pH accuracy, a large dual-level LCD display, internal GLP functions, automatic or manual temperature compensation, and approximately 200 hours of battery life, the Milwaukee MW105 is an excellent solution for routine and advanced water quality testing.
Measure pH, ORP & Temperature with One Instrument
The MW105 combines three essential water quality measurements into a single portable meter:
pH Measurement
Accurately measures pH from -2.00 to 20.00 pH, making it suitable for a wide variety of industrial, laboratory, and environmental applications.
ORP Measurement
Measures oxidation-reduction potential from ±2000 mV for monitoring oxidation and disinfection processes.
Temperature Measurement
Integrated temperature measurement from -20.0 to 120.0°C (-4.0 to 248.0°F) with automatic temperature compensation for improved pH accuracy.
Product Specifications
| Specification | Details |
|---|---|
| Manufacturer | Milwaukee Instruments |
| Model | MW105 MAX |
| Product Type | Portable pH / ORP / Temperature Meter |
| pH Range | -2.00 to 20.00 pH |
| ORP Range | ±2000.0 mV |
| Temperature Range | -20.0 to 120.0°C (-4.0 to 248.0°F) |
| pH Resolution | 0.01 pH |
| ORP Resolution | 0.1 mV |
| Temperature Resolution | 0.1°C / 0.1°F |
| pH Accuracy | ±0.02 pH |
| ORP Accuracy | ±1 mV |
| Temperature Accuracy | ±0.5°C (±1°C outside probe range) / ±1°F (±2°F outside probe range) |
| pH Calibration | Automatic 1, 2 or 3 Point |
| Standard Buffers | 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45 |
| ORP Calibration | Factory Calibrated |
| Temperature Compensation | Automatic or Manual |
| Included Probe | MA906BR/1 Amplified Double Junction pH/Temperature Probe |
| Probe Cable Length | 3 ft |
| Waterproof Rating | IP67 |
| Display | Dual-Level LCD |
| Battery | 3 × AA Alkaline Batteries |
| Battery Life | Approximately 200 Hours |
| Auto Shut-Off | Selectable (5, 10, 30, 60 Minutes or Off) |
| Dimensions | 200 × 85 × 50 mm |
| Weight | 0.26 kg (0.58 lbs) |
| Warranty | 2 Years (Meter) |
Features & Benefits
Laboratory-Grade Accuracy
Measures pH with an accuracy of ±0.02 pH, providing reliable results for professional testing applications.
Three Measurements in One Meter
Measure pH, ORP, and temperature using a single portable instrument.
Waterproof IP67 Construction
The rugged IP67-rated housing protects the meter from water and harsh working environments.
Automatic Temperature Compensation
Built-in temperature sensing automatically compensates pH readings for improved measurement accuracy.
Up to Three-Point Calibration
Supports one, two, or three-point automatic calibration using seven standard buffer solutions for maximum accuracy.
Professional Double-Junction Probe Included
Supplied with the Milwaukee MA906BR/1 amplified gel-filled double-junction pH/temperature probe, offering excellent durability and performance in difficult samples.
Large Dual-Level LCD Display
Clear digital display simultaneously shows measurement values and operating information for easy viewing.
Good Laboratory Practice (GLP) Functions
Built-in GLP features record calibration information and timestamps to support quality assurance procedures.
Long Battery Life
Operates for approximately 200 hours on three standard AA batteries.
Ideal Applications
The Milwaukee MW105 MAX is ideal for:
- Drinking water treatment
- Wastewater treatment
- Industrial process water
- Environmental monitoring
- Breweries
- Wineries
- Hydroponics
- Agriculture
- Aquaculture
- Food processing
- Chemical processing
- Research laboratories
- Educational institutions
Probe Maintenance
Proper maintenance extends probe life and ensures accurate measurements.
Storage
Store the probe hydrated using Milwaukee MA9015 Storage Solution. Never store the probe in distilled or reverse osmosis water, as this can permanently reduce probe sensitivity.
Cleaning
Regularly clean the electrode using Milwaukee MA9016 Cleaning Solution to remove buildup that may affect accuracy.
Calibration
Routine calibration using fresh buffer solutions maintains measurement accuracy. For best results, Milwaukee recommends using:
- MA9004 pH 4.01 Buffer Solution
- MA9007 pH 7.01 Buffer Solution
- MA9010 pH 10.01 Buffer Solution (for three-point calibration)
- MA9015 Storage Solution
- MA9016 Cleaning Solution
The Milwaukee PH-START Kit conveniently includes the most commonly used maintenance and calibration solutions.
Frequently Asked Questions
What does the MW105 measure?
The MW105 measures pH, oxidation-reduction potential (ORP), and temperature.
Is the meter waterproof?
Yes. The MW105 features an IP67 waterproof housing for reliable use in wet and demanding environments.
Is a probe included?
Yes. The meter includes the Milwaukee MA906BR/1 amplified double-junction pH/temperature probe. ORP probes are sold separately (MA921B/2).
Does the meter automatically compensate for temperature?
Yes. Automatic Temperature Compensation (ATC) adjusts pH readings using the built-in temperature sensor. Manual compensation is also available when required.
How accurate is the MW105?
The meter provides ±0.02 pH, ±1 mV ORP, and ±0.5°C temperature accuracy within the specified operating range.
How many calibration points are supported?
The MW105 supports up to three-point automatic pH calibration using seven standard buffer solutions.
How long do the batteries last?
Approximately 200 hours of normal operation using three AA alkaline batteries.
What industries commonly use the MW105?
The MW105 is widely used in water treatment, wastewater, breweries, wineries, hydroponics, agriculture, laboratories, aquaculture, food processing, environmental monitoring, and industrial quality control.
✅ This item is normally regularly stocked. Shipping times may vary depending on availability. Please contact us to confirm stock and shipping times. You will receive tracking details once the item has shipped.
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