The Colorimeter CL 400 measures specifically the colour of the skin. Measuring values are expressed as coordinates in the colour space L*a*b* (or as RGB).
The probe sends out white LED light, arranged circularly to uniformly illuminate the skin.The emitted light is scattered in all directions,some parts travel through the layers and some is scattered out of the skin.The light reflected from the skin is measured in the probe. The raw data of the probe are corrected with a special colour matrix to adapt them closely to standard values and are expressed accordingly.
The probe has been developed especially for the needs of measuring changes in the skin & hair color.
Cosmetic and pharmaceutical efficacy tests, like sun screen products, self tanners, make-ups, whitening products, decorative cosmetics, hair and carotene food supplements.
Please also read Frequent Asked Questions on the Skin-Colorimeter.
Dimensions: 13 cm, Core measuring area: Ø 5 mm, Illuminated area: approx. 17 mm Ø,
Cable length: approx. 1.3 m, Weight: 85 g
Measurement principle: reflection, Light: 8 white LEDs arranged circularly, range of emitted wavelengths: 440-670 nm, Units: xyz, RGB, L*a*b* index values (due to the unique structure of the skin and the special light source the values do not fully correspond to ISO standards and are therefore expressed as index values)., calibration to skin colours with a special correction matrix
Accuracy: ± 5 %
For the dimensions, etc. of the wireless probes, please see the technical data of the basic devices.
Technical changes may be made without prior notice.