Paper charged with a black, substantive, neutral dye, then impregnated with a fluorescein soln and dried. Prepn and application: Zellner, DE 124922 (1901); Chem. Zentralbl. 1901, II, 1032; Pharm. Zentralhalle 1901, 521; 1902, 297; E. Merck's Jahresber. 1901, 161-162.
This monograph has been retired and is no longer subject to revision or update.