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

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