ugra D50 Metamerism strips Colour temperature indicator - 50 pcs

ugra D50 Metameric strips 50 pieces

Colour temperature indicator

The ugra Light Indicator Strip D50 is used to check the conformity of a standard lighting to the standard illuminant D50. The two green print colours of the card form a metameric colour pair (conditionally equal colours). Under standard illuminant D50, the colour patches appear identical. Under any other illuminant, the colour patches appear different. This type of metamerism is called illumination metamerism. The cause is the different light spectrum of the respective illuminants. This way, you can easily recognise non-compliant lighting conditions and will not be fooled when colour matching.

The product contains 50 self-adhesive labels in the format 75 x 15 mm, slotted. 

The standard illuminant CIE D50 is described in the international standard ISO 3664:2009 as a so-called reference illuminant for the printing industry. The color temperature of D50 corresponds to 5000 Kelvin and the spectral energy distribution is defined with a spacing of 5 nm. For visual color assessment, the use of D50-compliant standard lamps is required.