Drawdown card Tool for assessing opacity and contrast ratio of coatings From Wikipedia, the free encyclopedia Drawdown cards are used for testing paints and coatings through wet film preparation. Black and white cards are used to measure both opacity and contrast ratio.[1] By measuring reflectance values of both parts of the card one can gain a quantitative opacity value of a paint sample.[2] References [1]"Paper, Film and Foil Converter 1987-08: Vol 61 Iss 8 : Free Download, Borrow, and Streaming : Internet Archive". Internet Archive. 23 October 2016. Retrieved 22 February 2026. [2]Charvat, Robert A. (23 October 2016). "Coloring of plastics- Fundamentals Second Edition : Robert A. Charvat : Free Download, Borrow, and Streaming : Internet Archive". Internet Archive. Retrieved 22 February 2026. See also Film applicator Glossmeter – Instrument for measuring specular reflection gloss Spectrometer – Used to measure spectral components of light This article related to art materials is a stub. You can help Wikipedia by adding missing information.vte Related Articles
