Carmine Acetic Acid

Carmine acetic acid (often abbreviated as KES ) is a solution of the color carmine (E 120) in acetic acid .

It is used to produce specimens for microscopy because it has the advantage of both staining (stains chromatin ) and simultaneously fixing the specimen.

Either a dilute solution of carmine in a half-concentrated acetic acid or the saturated solution is used. The employed also for the preparation of preparations Eisenkarmin is a solution of acetocarmine and iron (III) chloride .

Individual evidence

↑ Acetocarmine staining ( Memento from June 28, 2016 in the Internet Archive )
^ John Belling : The Iron-Acetocarmine Method of Fixing and Staining Chromosomes . In: Biological Bulletin . tape 50 , no. 2 , February 1926, p. 160–162 , doi : 10.2307 / 1536680 ( PDF ).

[1] Acetocarmine staining ( Memento from June 28, 2016 in the Internet Archive )

[2] John Belling : The Iron-Acetocarmine Method of Fixing and Staining Chromosomes . In: Biological Bulletin . tape 50 , no. 2 , February 1926, p. 160–162 , doi : 10.2307 / 1536680 ( PDF ).