What it does
CoffMeter W1 — Professional Water Activity Analyzer for Coffee
The CoffMeter W1 is a compact, fast, and accurate water activity (Aw) tester designed for coffee QC, roasting, and research. It uses a sealed humidity chamber with a magnetic floating base to deliver stable Aw readings in about 2 minutes. Perfect for checking green coffee stability, roasted coffee shelf life, and production consistency.
W1 supports home calibration with a saturated salt solution (included). Calibration takes ~5 minutes, the solution saturates in 1 hour, and can be reused for up to a month. The container is easy to clean with a soft brush, and samples should not be left inside long-term.
The device connects to the CoffeeOS App via Bluetooth for measurement history, firmware upgrades, and device management. Users can view SN, firmware version, battery status, and adjust auto-shutdown settings directly on the device.
Included: W1 main unit, magnetic base and sample tray, spoon, calibration bottle, USB-C cable, cleaning tools, certificate, user manual, and QR download card.
Ideal for coffee labs, roasteries, and production teams needing fast and reliable Aw measurement.