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JR Wood
02-26-00, 06:08 PM
How long is the proper dwell time for neutralizing sodium hydroxide?

Dan Flynn
02-26-00, 06:36 PM
Hi JR,


Good rule for dwell time is about 15 min. Some guys just leave it on.

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Dan Flynn
Flynn Service Pro
www.powerwash.net
708 715-4205

Greg - GCR PowerClean
02-27-00, 12:33 AM
Just as an addition to Dan's post...


It depends on how strong the NaOH formulation is... if it's stronger leave it on longer. I would always recommend rinsing after the process although. Oxalic acid is a granular based product which when dried re-crystalizes. It can leave your finish appearing blotchy.


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Greg Rentschler
GCR PowerClean
www.gcrpowerclean.com