On 07/12/2013 19:08, Adam Funk wrote:
On 2013-12-07, polygonum wrote:

Mr Medway or anyone else, do you have any advice on removing blood marks
from off-white wool-blend carpet?

Although quite some attempt was made to clean them up at the time,
various circumstances have resulted in them still being visible some 3/4
weeks later.

(No criminal aspect to this! Illness, unfortunately.)

Hydrogen peroxide (probably still available from your local
chemist's). As with any cleaning tactic, it's worth testing a little
of it on a hidden area first in case your carpet disagrees with it.

I have a feeling that blood will destroy peroxide faster that you can
apply it and if it doesn't the oxidation reaction will turn the iron
into insoluble ferric form fixing the stain as rust.

Best best is a proprietory blood/protein stain remover which tend to be
enzyme based with a reducing agent in. Proefssional cleaners might be
able to do better with more aggressive reagents.


--
Regards,
Martin Brown