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Ged

  • Posts: 315
sodium hypochlorite
« on: April 24, 2008, 06:45:07 am »
Hi
What strength of hypochlorite is used for stone cleaning and can anyone let me know of a supplier. A neighbour of where I was working yesterday asked me about brightening her stone steps to match the rest of the stonework. She has tried pressure washing and acid. I told her hypochlorite might do it. Have pics but never been able to download to this site.

Regards
Ged