2 Different Stains, Surfaces
I have two different stains that I need help with. The first stain is less than a day old; it is of the most concern. The second stain, on my concrete deck, is three years old.
1) I spilled ~20% Silver Nitrate (Taylor reagent R-0718) on my white formica kitchen counter top. Trying to remove it by wiping it up quickly with a wet paper towel, then with dishwashing liquid and water, accomplished nothing. In truth, the first attempt wasn't entirely pointless -- it increased the stain's footprint on the counter. Ugh!
2) Before I understood that it's a bad idea to leave open or recently used containers of pool chemicals on the pool deck (especially if you plan to kick it with your foot while netting the pool one month after the concrete is poured) I did the unthinkable and then compounded the problem by doing nothing for almost an hour. (Of course, I realize now I could have likely erased this embarrassment by immediately hosing it off with water.) But my inaction caused a couple of ugly stains (7-8" long X 4-5" wide) that are quite noticable right in front of the entrance to the pool. The offending chemical came from an open plastic container of muriatic acid 31.45% (HCI 20° Baumé); washing and scrubbing an hour later had no effect and they've not faded with time. Is there any remedy for embedded acid stains on poured concrete (broom finish) that doesn't involve replacing the concrete? The deck concrete was colorized upon application to effect a light tan or sand tone, but the orange stains stand out.
All responses welcome. Thank you.
16'x29' free-form 14K gal IG gunite pool; SWCG & sodium hypochlorite 8.25%; Hayward SwimClear C4025 cartridge filter; Hayward SP3202VSP TriStar Variable Speed Pool Pump; custom test kit based on Taylor K-2006C; city; PF:8.6
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