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Posted

The latest WMO /UN Environment Programme Scientific Assessment of Ozone Depletion, issued in 2018, concluded that the ozone layer on the path of recovery and to potential return of the ozone values over Antarctica to pre-1980 levels by 2060. This is because of the long lifetime of the chemicals in the atmosphere.

https://public.wmo.int/en/media/news/record-breaking-2020-ozone-hole-closes

But for one aspect that gets better, too many others are already unrepairable.

 

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Posted

It was used in spray cans a lot in the electronics biz back in the day. I have an old industrial watch cleaning machine with a Dymo label on one jar marked Freon, and spoke to folks in electronics who would get 20 liter drums of it. It's apparently a lot less dangerous to your health than some other solvents- unless you are smoking around its vapors.

  • Like 2
Posted

Thanks for all of the responses. 

I was taken aback by the instructions in the manual.

Somewhere around in my lab, I have some freeze spray I used for electronics debugging.  Probably 40 yrs old.  Likely freon, but not certain

  • 1 month later...
Posted

Years ago the big three auto companies once had huge vats of Freon that they would dip parts in before plating. Long ago I was given a couple of cans of it. It was like magic how well it cleaned.

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