Inventors:
Arjun Mallik - Pequannock NJ
Daniel Koetters - Butler NJ
Ludmilla Pluto - Pequannock NJ
Assignee:
Fisher Scientific Company - Pittsburgh PA
International Classification:
G01N 100
G01N 130
C09B 4400
Abstract:
Formulations of a cationic dye component (e. g. , Azure A-Azure B-Azure C mixtures), an anionic dye component (e. g. , Eosin Y) and an alcohol solvent (e. g. , methanol or methanol-glycerol mixtures) are stabilized by an amino acid or its acid addition salt (e. g. lysine hydrochloride or glycine or a mixture of these).