Colour measurement of coffee and tea
For an objective, reproducible and communicable evaluation of roasting degrees, producers and coffee roasters need clear and reliable numerical values. Does the colour of ground coffee tend more towards blue or gray or rather brown? Or is the coffee bean still bluish or already grayish during the roasting process? Judging this is an almost impossible task for the human eye. Hue, intensity and brightness make the identification of colour complex and extremely difficult. HunterLab colorimeters analyze colour values of both coffee and loose tea precisely, reliably and independently of human and external factors (lighting conditions).
The colour of freshly ground coffee is an important quality indicator that is closely monitored during production, as the degree of roasting of the coffee directly influences both the taste and appearance of the freshly brewed beverage. Instrumental colour measurement with HunterLab measuring devices is easy to perform and guarantees reliable testing to meet the highest standards.
Recommended indices for measuring the colour of coffee
There are three special indices for coffee products in the industry, which can be set both in the firmware and in the software:
SCAA/G – The Agtron number for the Gourmet Coffee Scale, introduced by the Specialty Coffee Association of America www.scaa.org. This scale is based on a series of visual colour standards from the SCAA that are used to classify the colour of coffee powder.
SCAA/C – The Agtron number for the commercial coffee scale, introduced by the Specialty Coffee Association of America, based on the SCAA/G scale.
HCCI – The Hunter Coffee Colour Index, based on the reflectance at 640 nm; a common measurement method used by many roasting plants.
This can also be individually adjusted to other previously used indices.
Our solutions for coffee powder/beans:
ColorFlex EZ Coffee
Compact colorimetric station
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Many measuring openings
Various measuring openings (10 mm, 13 mm, 19 mm, 25.4 mm, 31.8 mm) for many types of samples. -
Compact dimensions
With a weight of 4.5 kg and dimensions of 16.0 cm (height), 13.0 cm (width) and 36.0 cm (depth), the CFEZ is the ideal partner in the laboratory and production. -
Integrated QC software
Display of absolute and differential data, colour location visualization, spectral curves, spectral data and PASS/FAIL with individual tolerances.
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45°/0° geometry
The CFEZ measures colour as the human eye sees it. Every day. Reliable and precise. -
In many versions
The ColorFlex EZ is available in Tomato, Citrus and Coffee versions. -
Uncomplicated & precise
Simple measurement at the touch of a button with measurement results within a few seconds. Reduces training time, optimizes the workflow and increases your productivity.
Aeros Coffee
Laboratory device for measuring colour and degree of browning
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Non-contact measurement
The sensor detects the sample without contact, without having to measure through plastic or glass.
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Large surface area
The rotating sample plate captures over 170 cm² of the sample in 35 measurements in 7 seconds. -
Integrated QC software
The EasyMatch QC Essentials quality control software is integrated into the device and provides all the required colour indices and metrics.
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Intelligent height adjustment
The distance sensor automatically compensates for height differences in irregular samples. -
Smart user interface
Your measurement results can be easily transferred to existing LIMS or SPC systems. -
Uncomplicated & precise
Simple "one touch" measurement reduces training time, optimizes the workflow and increases your productivity.
Do you measure the colour of loose tea or tea or coffee in liquid form? Talk to us, we have a solution for these applications too!
Discover how you can define a colour profile for your coffee. We offer customized solutions for these special requirements!
Further information for you on this topic:
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Brochure "Colour measurement of coffee, cocoa and tea"
HunterLab worldwide:
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Headquarters, North / South America
Hunter Associates Laboratory, Inc.
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11491 Sunset Hills Road
Reston, VA 20190-5280
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+1 571 470 6028
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Asia-Pacific
HunterLab Asia Limited -
Flat E, 13F Leahander Centre,
28 Wang Wo Tsai Street,
Tsuen Wan,
New Territories,
Hong Kong -
+852 2406 1723
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Europe / Middle East / Africa
HunterLab Europe GmbH
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Dr.-August-Einsele-Ring 15
82418 Murnau
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+49 8841 9464
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The blog about colour measurement
All about colour measurement
The HunterLab Europe company blog keeps you up to date on applications and measurement methods, product presentations and company news. Our Spectrophotometry-Our experts regularly give you an overview of the colourful and diverse world of colour measurement.
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