Summary for hand sanitizer stains Discussion
The thread on hand sanitizer stains from hot dip galvanised material is very brief: the questioner says government instructions led them to spread sanitiser on hot dip galvanised material to kill Covid-19, but two days later they noticed etching marks or white dots on the surface. The excerpt shown does not include a full reply or a repair method, so no specific removal process can be confirmed from the source. The only named expert in the excerpt is Geoff Crowley, identified as a galvanizing consultant at Crithwood Ltd., but his actual advice is not present in the provided text. Based on the available source, the issue is that sanitiser appears to have caused visible surface damage or staining on the galvanised coating, and the thread is seeking guidance on how to remove or treat those marks.
Q. Please advise: as per the government instruction we have spread sanitiser on the hot dip galvanised material to kill pandemic virus Covid-19. Now what happened after two days later is we found etching mark (White dots) on the hot dip galvanised material.
It looks like white rust or wet storage stain. Please suggest how to remove these stain marks from the material.
Gopinath Harichandran
– THANE, India
May 17, 2020
A. There seems no good reason to spread sanitiser on a zinc surface after galvanizing. Are you suggesting this virus will withstand the process?
Now to clean up after making this mistake:
A dilute solution of citric acid
⇦ on
or
Amazon [affil link] followed by a water wash might work. Try a small area first. It works OK for standard white rust.
Is your customer claiming this material does not meet a quoted standard agreed with the galvanizer prior to order?
Geoff Crowley, galvanizing consultant
Crithwood Ltd.
Bathgate, Scotland, UK
September 1, 2020
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