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DanFountain · 10th March 2008, 13:25

Quote: (Originally Posted by AD_ward9)

... Take PVC to start with. Put it into a chamber with a window in it. Blow down, bring it back to surface. Watch it smoke on the way back up, especially with helium: literally the gases that come off it often look like smoke (I must post some pics!). Now try to google something like "PVC Greenpeace" and then "MSDS PVC", and look what you are breathing in. Nothing to worry about right now, but it will not help you attain much in the way of old age.
...
Alex

Alex,

Thanks for the information. Could you be more specific - how deep do you blow it down & surface it in order to observe the visible offgassing? What type / grade of PVC were you testing? I'd do it myself but I don't happen to have a chamber with a window in it.

-Dan

10th March 2008, 13:25	#48 (permalink)
DanFountain This is my custom title! Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Dec 2005 Location: Lake Superior Posts: 113	Re: home made dsv Quote: (Originally Posted by AD_ward9) ... Take PVC to start with. Put it into a chamber with a window in it. Blow down, bring it back to surface. Watch it smoke on the way back up, especially with helium: literally the gases that come off it often look like smoke (I must post some pics!). Now try to google something like "PVC Greenpeace" and then "MSDS PVC", and look what you are breathing in. Nothing to worry about right now, but it will not help you attain much in the way of old age. ... Alex Alex, Thanks for the information. Could you be more specific - how deep do you blow it down & surface it in order to observe the visible offgassing? What type / grade of PVC were you testing? I'd do it myself but I don't happen to have a chamber with a window in it. -Dan __________________ Try not. Do - or do not. There is no try. -Yoda
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