Green’s Dictionary of Slang

Condy’s fluid, a strong solution of sodium manganate or permanganate, used as a disinfectant; also attrib.

[1857		J. Griffiths in Condy Disinfection (1862) 37: I have fairly tested the efficacy of ‘Condy’s Disinfecting Fluid’ upon a quantity of putrid meat which was rendered perfectly sweet thereby].
1929		K.S. Prichard Coonardoo 300: All burnt she was, her wounds fly-blown. Monty washed ’em out with Condy’s for her.
1977		(con. 1941) R. Beilby Gunner 255: In its hive of stuffy rooms life nightly, and daily, performed its most elemental of functions, having been first rendered sterile by douche bags and condy washes and protected from contagion by prophylaxis.