R & D


Wet Film Guage

Wet Film Guage

Place a comb perpendicular to and touching the substrate. Hold the comb in position and wait a few seconds until the teeth are wet. Remove the comb from the film. The wet film thickness lies between the biggest value ‘coated’ or ‘wet’ tooth and the smallest value ‘uncoated’ or ‘dry’ tooth. ...
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Toxicity of Azo Dyes in Pharmaceutical Industry

Toxicity of Azo Dyes in Pharmaceutical Industry

Azo compounds represent about two thirds of all synthetic dyes. Their usage in pharmaceutical industry has many purposes. One of the most important is coloring of pharmaceutical agents which improves their easy identification. Azo dyes often used in manufacturing of pharmaceuticals are: E102 Tartrazine, E110 Sunset Yellow FCF, Ponceau 4R (Cochineal Red A), Azorubine (Carmoisine), Amaranth, E133 Brilliant Blue and E129 Allura Red. Many azo dyes show carcinogenic and mutagenic activity, and they can provoke allergic reactions. Generally, toxicity of ingredients grows with the increase of benzene rings in their structure. Carcinogenicity of azo dyes directly depends on the structure of molec ...
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ralcolor

ralcolor

http://www.ralcolor.com This site displays a review of standard colors according the Classic RAL System. RAL is used for information defining standard colors for paint and coatings. It is the most popular Central European Color Standard used today. The colors are used in architecture, construction, industry and road safety. The RAL colors in this chart have been matched as closely as possible. Use offical RAL color product for most accurate color. ...
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