From: Ralph Stuart <ralph**At_Symbol_Here**>
Subject: Re: [DCHAS-L] SF6 fume hood certification
Date: Fri, 12 Nov 2021 10:45:12 -0500
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: 7C507FA4-5D9F-4305-B090-4D318B0C4BB6**At_Symbol_Here**

> >I learned from discussion with two fume hood testing professionals that the major SF6 measuring instrument is no longer being manufactured or no longer being supported, and certified testers are in a holding pattern and waiting for the new standard and the potentially new equipment requirements that could go with a change in tracer gas.
Is this the SF6 detector or the orifice used to release the SF6 in the hood? I know that the latter was a speciality item for this test and hard to acquire, unless you made your own...

- Ralph

Ralph Stuart, CIH, CCHO

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