DiFluid CoffMeter W1 Coffee Water Activity Meter

The CoffMeter W1 Coffee Water Activity Meter is a precision instrument designed to measure water activity in green coffee beans. Water activity serves as a critical indicator of shelf life, flavour stability, roasting consistency, and safe storage conditions. By quantifying the amount of free water available in a sample, it provides roasters and producers with an objective understanding of moisture behaviour that directly impacts fermentation outcomes, storage protocols, and final cup quality.

Maintaining optimal water activity supports beneficial microbial activity during processing while preventing degradation that can flatten flavour potential or shorten longevity. Built for accuracy and workflow efficiency, the W1 combines capacitive sensor technology with real-time temperature and environmental compensation to deliver highly repeatable readings, even in changing conditions.

Each measurement is completed in approximately two minutes and visualised through a live stabilisation curve, helping users evaluate sample uniformity before accepting results. Seamless CoffeeOS integration enables instant Bluetooth data transfer, full historical tracking, and dataset export, while the intuitive rotating sample tray and hybrid touch-button interface ensure smooth, ergonomic operation in lab or production environments.

Features

• Measures water activity in green coffee beans
• Fast testing time of approximately two minutes
• Accuracy of ±0.02 Aw for reliable quality control
• Real-time temperature and environmental compensation
• Live measurement curve for real-time stability analysis
• On-device history storage with batch tracking and timestamps
• Bluetooth connectivity with CoffeeOS integration and export

Specifications

• SKU: W1-NE-NE-CM1-BK
• Measurement time: ~2 minutes
• Sensor type: Capacitive measurement sensor
• Connectivity: Bluetooth (CoffeeOS integration & export)
• User interface: Capacitive touch + physical button controls