64 mm glass cuvette filled with cocoa powder with matching aperture on the ColorFlex L2.
HunterLab recommends the ColorFlex L2 spectrophotometer and the use of a special 64 mm optical glass cuvette for the color measurement of cocoa powder. By measuring the sample from below through the glass base, you have a perfectly flat and homogeneous measuring surface. The cuvette aperture of the ColorFlex L2 also ensures that the cuvette is always positioned centrally above the aperture.
Powders consist of tiny particles. To ensure a uniform color measurement, a uniform surface should be created.
Four samples of cocoa powder: light brown, medium brown, dark brown? The naked eye does not provide reliable color values.
A generous amount of cocoa powder is therefore placed in a 64 mm round glass cuvette. Sufficient coating thickness minimizes the effects of incident ambient light and guarantees precise measurements.
Carefully tap the cuvette once briefly on a hard surface so that the powder settles a little and then place it on the aperture so that the powder can be measured through the glass bottom of the cuvette. (Make sure that no powder gets onto the aperture!)
The color measurement is triggered at the touch of a button and the measured values are shown directly on the display.
The accessories:
- Glass cuvette 64mm or Petri dish
- Cuvette aperture
Case Study: Measuring method – Color measurement of alternative cocoa powder
Read our case study “Color measurement of alternative cocoa powder” to find out how spectral analysis with the ColorFlex colorimeter optimally supports Planet A Foods in quality assurance.
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