From: "Stuart, Ralph" <Ralph.Stuart**At_Symbol_Here**KEENE.EDU>
Subject: Re: [DCHAS-L] HF concentration and gluconate gel
Date: Fri, 13 Oct 2017 16:08:34 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 11C2C0B8-AE51-4A0D-A177-358D189DC15D**At_Symbol_Here**

> >So my recommendation would be that whatever concentration HF you work with, having calcium gluconate gel available as a first aid measure would be a very good idea.

The challenge I have found with this strategy is maintaining a useful stock on hand requires rotating the gel on a regular basis (annually? I think). The expiration dates are very difficult to track accurately from outside the lab where the HF is being used and should be the responsibility of the lab using the material. Then there's the expense of replacing the gel. Many people interested in using HF look at the catalog price of the solution they want to buy and assume that's the total cost. It's not...

- Ralph

Ralph Stuart, CIH, CCHO
Environmental Safety Manager
Keene State College
603 358-2859


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