RE: filters

["Cook, Lew (LCOO)" <LCOO@chevron.com>]

Activated charcoal traps radon (that's what they use for detection in radon
in air surveys) and passes water. Water charcoal filters used on ground
water will trap lots of radon - just stick a micro R meter on one and see!

Cold traps will remove most water vapor but I don't know how much radon may
come down with the water vapor - I suspect not too much.

Lew
510 242-7040
lcoo@chevron.com





> -----Original Message-----
> From:	bob [SMTP:tagold@nwc.net]
> Sent:	Monday, November 15, 1999 1:27 PM
> To:	Multiple recipients of list
> Subject:	filters
> 
> Hello- Is there a filter or bubbler etc. that will pass radon but stop
> water vapor?
> 
> Conversely, is there a filter etc. that will pass water vapor but stop
> radon gas?
> 
> Best regards,
> Robert Goldstein
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