DiFluid CoffMeter W1 Coffee Water Activity Meter
The DiFluid CoffMeter W1 delivers fast, reliable water activity (aw) measurements in approximately 2 minutes to assess coffee safety, shelf life, and freshness. Utilizing a high-precision moisture sensor alongside automatic environmental compensation for temperature, humidity, and atmospheric pressure, it provides laboratory-quality results at any altitude.
Equipped with a magnetic sample tray and simple one-button calibration using saturated saline solution, this compact device streamlines quality control workflows. Seamless Bluetooth connectivity with the CoffeeOS app allows green coffee traders, roasters, and quality managers to log data and track stability trends effortlessly.
Key Features
| Brand | DiFluid |
| Model | CoffMeter W1 |
| Measurement Principle | Humidity-based detection |
| Measuring Range | 0.05 – 0.99 aw |
| Accuracy | ±0.02 aw |
| Resolution | 0.001 aw |
| Measurement Time | Approx. 2 minutes |
| Sample Quantity | 6–8 g coffee beans |
| Connectivity | Bluetooth (CoffeeOS app) |
| Calibration | One-button, saturated saline solution |
| Charging Port | USB-C |
| Weight | 750 g |
Highlights
- Aw measurement in approximately 2 minutes
- Reliable assessment of mycotoxin risk (from 0.70 aw) and aroma loss (~0.30 aw)
- Highly accurate humidity sensor for consistent, laboratory-quality results
- Automatic environmental compensation (temperature, humidity, pressure) for every altitude.
- One-button calibration with saturated saline solution
- Magnetic sample tray for easy handling
- Bluetooth and CoffeeOS integration for logging and QC workflows
- Ideal for green coffee traders, importers, roasters, cafes and coffee enthusiasts.
How to use
Place 6–8 g of coffee beans into the magnetic sample tray, insert it into the CoffMeter W1, and initiate the test. Accurate water activity readings will display in approximately 2 minutes and can be synced to the CoffeeOS app via Bluetooth.
What's included
- CoffMeter W1 measuring device
- Sample tray & sample holder
- Shovel, brush, USB-C cable
- Calibration vials
- Protective case
Frequently asked questions
How long does a water activity measurement take?
The DiFluid CoffMeter W1 delivers accurate water activity (aw) readings in approximately 2 minutes.
How much coffee is required for testing?
The sample tray requires approximately 6 to 8 grams of coffee beans per test.
How is the device calibrated?
Calibration is performed with a single button press using standard saturated saline solution calibration vials.
Does altitude affect the measurement results?
No, the integrated temperature, humidity, and pressure sensors automatically compensate for environmental variations and differing altitudes.
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DiFluid CoffMeter W1 Coffee Water Activity Meter
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