International Janitorial Cleaning Services Association - Oxalic Acid Best Treatment For Getting Rid Of Concrete Stains

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Oxalic Acid Best Treatment For Getting Rid Of Concrete Stains

08 Aug 2011 8:07 AM | IJCSA - (Administrator)

The classic treatment is oxalic acid, which is sold at some paint stores for use as a wood bleach. It is often sold in small bags. To use oxalic acid, mix one-half cup of the powder in a gallon of warm water and mop it on the stain. Let it work for five to 10 minute.

More at source: Courant.com

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