✅ 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 MW401 PRO Low Range Total Dissolved Solids (TDS) Meter
The Milwaukee MW401 PRO Total Dissolved Solids (TDS) Meter is a reliable, portable instrument designed for fast and accurate measurement of total dissolved solids (TDS) in water. Featuring automatic temperature compensation (ATC), a professional SE510 conductivity probe, and an easy-to-read LCD display, the MW401 is ideal for laboratories, aquariums, aquaculture, water treatment, food processing, and water conditioning applications.
Accurate measurement of dissolved solids helps improve water quality, optimize treatment processes, and reduce operating costs. Whether monitoring drinking water, nutrient solutions, aquariums, or industrial water systems, the MW401 delivers dependable readings in a lightweight, easy-to-use design suitable for both professionals and hobbyists.
Supplied complete with the SE510 conductivity probe, a 1382 ppm calibration solution, and a long-life battery, the Milwaukee MW401 is ready for immediate use.
Why Measure Total Dissolved Solids?
Total Dissolved Solids (TDS) represent the concentration of dissolved minerals, salts, and other substances present in water. Monitoring TDS helps maintain water quality and improve system performance across many applications.
Common benefits include:
- Monitoring drinking water quality
- Optimizing water treatment systems
- Managing nutrient concentrations
- Improving aquarium and aquaculture health
- Supporting laboratory testing
- Reducing chemical consumption
- Maintaining process consistency
Product Specifications
| Specification | Details |
|---|---|
| Manufacturer | Milwaukee Instruments |
| Model | MW401 PRO |
| Product Type | Portable Total Dissolved Solids (TDS) Meter |
| Measurement Range | 0–1990 mg/L (ppm) |
| Resolution | 1 mg/L (ppm) |
| Accuracy | ±2% Full Scale @ 25°C |
| TDS Conversion Factor | 0.50 |
| Temperature Compensation | Automatic (5–50°C / 41–122°F) |
| Included Probe | SE510 Conductivity Probe |
| Probe Cable Length | 1 m (3.3 ft) |
| Calibration Solution Included | MI0032B 1382 ppm Standard |
| Battery | 1 × 9V Alkaline |
| Battery Life | Approximately 300 Hours |
| Operating Temperature | 0–50°C (32–122°F) |
| Meter Dimensions | 143 × 80 × 32 mm |
| Meter Weight | 0.23 kg (0.5 lb) |
Features & Benefits
Accurate Low Range TDS Measurement
Measures dissolved solids from 0 to 1990 mg/L (ppm) with 1 ppm resolution, making it suitable for a wide variety of water quality applications.
Automatic Temperature Compensation (ATC)
Automatically compensates measurements for water temperature to improve testing accuracy.
Professional Conductivity Probe Included
Supplied with the Milwaukee SE510 conductivity probe featuring a 3.3-foot cable for convenient sampling.
Large LCD Display
Easy-to-read digital display provides clear measurement values for both field and laboratory work.
Portable & Lightweight
Compact design makes the MW401 easy to carry between sampling locations while remaining durable for everyday use.
Long Battery Life
Operates for approximately 300 hours on a single 9V alkaline battery.
Ready to Use
Includes a 1382 ppm calibration solution so users can calibrate the instrument before testing.
Ideal Applications
The Milwaukee MW401 PRO is ideal for:
- Drinking water testing
- Water treatment plants
- Water conditioning systems
- Reverse osmosis systems
- Aquariums
- Aquaculture
- Hydroponics
- Food processing
- Beverage production
- Environmental monitoring
- Research laboratories
- Educational institutions
Why Monitor TDS?
Improve Water Quality
Routine TDS testing helps identify changes in water quality before they become larger problems.
Optimize Water Treatment
Monitoring dissolved solids allows operators to improve filtration efficiency and reduce treatment costs.
Support Healthy Aquatic Systems
Maintaining proper TDS levels promotes healthier conditions for fish, aquatic plants, and other aquatic life.
Verify Drinking Water Quality
TDS measurements help evaluate the effectiveness of filtration and water conditioning systems.
Calibration & Maintenance
For best performance:
- Calibrate regularly using 1382 ppm calibration solution (MI0032B or MA9062).
- Rinse the probe with clean water after each use.
- Store the probe clean and protected when not in use.
- Replace calibration solution regularly to maintain measurement accuracy.
Routine calibration ensures the meter continues to provide accurate and repeatable TDS measurements.
Frequently Asked Questions
What does the MW401 measure?
The MW401 measures Total Dissolved Solids (TDS) in water.
What is the measurement range?
The meter measures from 0 to 1990 mg/L (ppm).
What accuracy does the MW401 provide?
The instrument provides ±2% Full Scale accuracy at 25°C.
Does the meter automatically compensate for temperature?
Yes. The MW401 features Automatic Temperature Compensation (ATC) from 5°C to 50°C.
Is a probe included?
Yes. The meter includes the Milwaukee SE510 conductivity probe with a 1 metre (3.3 ft) cable.
Is calibration solution included?
Yes. The MW401 includes MI0032B 1382 ppm calibration solution for initial calibration.
How long does the battery last?
The meter operates for approximately 300 hours using one 9V alkaline battery.
Who is this meter designed for?
The MW401 is suitable for water treatment professionals, laboratories, aquaculture operations, aquarium owners, hydroponic growers, food processing facilities, and anyone monitoring water quality.
✅ 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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