30-day
hassle-free returns
Worldwide shipping
Human support
Not AI
Award-winning design
Fast, easy, at home calibration
30-day hassle-free returns • Worldwide shipping • Human support, not AI • Award-winning design • Fast, easy, at home calibration
Buy DiFluid Omix Plus
Coffee Quality & Roast Analyzer >
Moisture & Water Activity
Analyze 150g samples for precise moisture readings and gold-standard chilled-mirror water activity readings.
True Density Insights
Measure bulk density and estimate actual bean density with advanced visual gap correction.
Color Distribution Histogram
Capture full roast color histograms using near-infrared imaging with 18-20 gram samples, measuring every pixel, not a single point.
Size & Volume Analysis
Measure screen size, bean diameter, and average volume per bean.
Environmental Tracking
Built-in sensors for ambient temperature, humidity, pressure, and altitude.
Effortless Calibration
No need to buy calibration samples. Calibrates with included certified standard material.
Connected to CoffeeOS and DiFluid Café
Syncs with your other devices, saves your data, and keeps improving with wireless updates.
What's in the Box?
Frequently Asked Questions
What is the sample size?
For green coffee, ~150 grams, depending on density.
For roasted coffee color, ~18-20 grams.
For ground coffee color, ~3-5 grams.
How accurate is the water activity measurement?
Omix utilizes the only internationally recognized method for accurately testing water activity, known as the "Chilled Mirror Dew-Point Method." It works by cooling a mirror in a sealed chamber until condensation forms; the temperature at which this occurs is the dew point, which corresponds to the water activity of the sample.
This is normally a slow process because overshooting will require waiting for the mirror to heat back up. Omix solves this problem by combining data from its sensors to predict the dew point and cooling fast, and slowing down as it approaches the dew point.
Omix is accurate to ±0.005 Aw.