Date: Tue, 19 Jun 2007 09:42:35 -0700
Reply-To: Gordon Miller <miller22**At_Symbol_Here**LLNL.GOV>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Gordon Miller <miller22**At_Symbol_Here**LLNL.GOV>
Subject: MeOH and Respirator Cartridges

Chemicals with high vapor pressures (e.g., methylene chloride, 
fluorocarbons) don't adhere to activated charcoal very well so 
air-purifying respirators are not advisable for them. NIOSH generally 
kicks you up to air-supplying respirators for them.

Peter Zavon is right, according to 29 CFR 1910.134, cartridge 
replacement must be guided by a changeout schedule. Most respirator 
manufacturers can provide them on discs or at their Web sites. If 
that doesn't work, try OSHA at: .

Gordon Miller
Respirator Program Administrator
Lawrence Livermore National Laboratory
P.O. Box 808  (L-379)
Livermore, California 94550
(925) 423-8036
Fax (925) 422-5176

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