Oxalic acid question

B Spring

New member
I have a customer who I'm trying to get his parking lots as white as I can, so I bought some oxalic acid, because I heard it helps whiten concrete, does anybody know what the mixture for this is?
 
What he said. Warm water.
 
Also,..you won't see the real results until it completely dries out. This came up a few years ago,..and the guy went back to re-treat it and it was nice and white.

I tend to put it on a wet surface and leave it? Although,..depending on the immediate foot traffic an area may see,..I will rinse it in some instances.

Jeff
 
Ok I appreciate the help, I bought 2 bags and didn't know how to mix it
 
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