[FullMetal]

First post on the forums so please be kind.

A service engineer came round to service my Orion turbo Karl-Fischer titrator and managed to drip hydranal composite on my lab floor. 

Now I have an ugly yellow stain that is pretty stuborn. Any of you wonderful analytical chemists dealt with this problem before or have any bright ideas?

[Stepan]

The stain is likely I2. Try sodium thiosulfate/H2O  solution to discolour the stain. Wash it away with large amount of water.