Based on a study of the absorption properties of prodigiosan it has been shown that its UV absorption spectrum is characterized by an arm at 250-260 nm with an inflection point at 260 nm. The concentration ranges within which the optical density of prodigiosan solution obeyed the Bouguer-Lambert-Beer law were measured. This allowed the development of a quantitative spectrophotometric method for determination of prodigiosan in ampouled solutions.
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