All Bright Dyes products are safe, non-toxic, biodegradable and certified to NSF International Standard 60 for use in drinking water.
Choice of color should be based on the contract to the background of the water body. Choosing red, orange, or yellow green, because of their fluorescent nature, may afford greater apparent contrast than non-fluorescent blue. Fluorescent dyes may also detect visually with a single hand-held laboratory black light (U.V.) at significantly lower levels – in the range of 10 ppm in ideal conditions.
Blue dye is frequently used for decorative effects. evaluation of household systems, and generally where the blue color may be more acceptable to public view.
Red, orange, and yellow/green are sometimes used jointly in dual tracing studies – both visually and fluoremetric analysis.