From: Harry Elston <helston**At_Symbol_Here**>
Subject: Re: [DCHAS-L] HF concentration and gluconate gel
Date: Fri, 13 Oct 2017 10:28:12 -0500
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 01f401d34437$e601bd00$b2053700$**At_Symbol_Here**



I'm not a physician here, but here's my take:


  1. Regardless of concentration in-use, having it on hand provides for good first aid practices.
  2. How did the end-user get to "low concentration?" Did they dilute a higher concentration solution?
  3. "Low concentration" tends to become "higher concentration" use over time because (nearly) every scientist believes "more is better". My observation of scientist nature over time. That circles the logic back to #1 above.


Honeywell's guide does give cutoff concentrations to define "dilute."




From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU] On Behalf Of Jeffrey Lewin
Sent: Friday, October 13, 2017 9:47 AM
Subject: [DCHAS-L] HF concentration and gluconate gel


I received a cold call for gluconate gel kits this morning that I sent on to departmental CHO's.  Someone asked if they should have kits available for low concentrations of HF (<0.1%).


Does anybody have a HF "cutoff" where they don't require/recommend kits be immediately available in the laboratory?




Jeff Lewin

Chemical Safety Officer

Compliance, Integrity, and Safety

Environmental Health and Safety

Michigan Technological University

Houghton, MI 49931


O 906-487.3153

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