| Solubilized phthalocyanine reactive dyes are used for bright turquoise shades that cannot be obtained with either azo or anthraquinone chromogens. |
| Pellicle can become stained as a result of daily food consumption and the chromogens, or pigments, contained in food, tobacco and beverages. |
| The excellent contrast between the Fast Red and DAB chromogens allows for easy antigen differentiation. |
| A device for the characterisation of microorganisms comprising a porous body having regions of differing pore size said regions being associated with different chromogens specific to enzymes produced by microorganisms. |
| Chromogens in the medium aid easy identification and differentiation by producing brightly coloured colonies. |
| Benzene compounds with which chromophores are combined are known as chromogens. |
