Definition of gloss: optical property of a surface with the ability to reflect light.

When a light beam streams at a defined angle of incidence at a paint layer, the largest portion of the beam penetrates the surface, and a certain portion is reflected. As a result, gloss measurements are not given in percentages, but in gloss units (GU) ranging from 0-100.

The so-called reflectometer value refers to a polished black glass standard and not to the light amount.

This standard has a defined refractive index of 1.567 and is set equal to 100 gloss units (GU).

Mirrors, polished metal and certain foils have a much higher refractive index compared to coatings or black glass standard. These products generate immensely higher gloss values, ​​which can go up to 2.000 GU.

Standards: DIN 67530, EN ISO 2813, ASTM D 523, ISO 7668

Gloss measuring gauges

Gloss measuring instruments GlossTector

Gloss measuring instrument GlossTector©

  • Hand-held instruments for gloss measuring

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Glanzmessgerät Mini GlossTector 60°

Gloss measuring instrument GlossTector© 60° Mini

  • One of the smallest and most practical gloss measurement instruments ever

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