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April 2002

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Subject:
From:
Carl VanWormer <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 26 Apr 2002 07:46:45 -0700
Content-Type:
text/plain
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text/plain (50 lines)
According to the site:
http://www.emsdiasum.com/ems/clean/duster.html
The stuff I'm using claims "100% ozone-safe pressurized duster products".

Since I turn the cans upside down (or refill my quick-freeze cans for a more
convenient spraying position), am I being more gentle to the environment?
If so, we can get down to the real question of "am I wrecking my electronics
systems by using quick-freeze for troubleshooting?"



Carl Van Wormer
Cipher Systems
1815 NW 169th Place, Suite 5010
Beaverton, OR  97006
Phone (503)-617-7447    Fax (503)-617-6550

-----Original Message-----
From: Brian Ellis [mailto:[log in to unmask]]
Sent: Friday, April 26, 2002 2:52 AM
To: [log in to unmask]
Subject: Re: [TN] Freeze Spray Trouble Shooting

Bev

I agree PFCs are the worst climate changers (with SF6) that exist. Some
of them are over 10,000 times worse than CO2. As a rule of thumb, 6
freezing cans which contain a PFC gas would have as much effect on
climate change as a medium car over its whole lifetime (horrific
thought). Furthermore, there will still be the contents of two of those
cans in the atmosphere 40-odd generations from now (assuming man lives
for another 40 generations!). However, I think most freezing cans
contain HFC-134a, which is bad enough but not as bad as PFCs. Some may
still contain HCFC-22 which is just as bad AND an ozone depleter, to
boot, but is not phased out under the Montreal Protocol until 2010 (some
countries may phase it out sooner).

Brian

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