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Previous by Date: Subject: Re: [DCHAS-L] HF concentration and gluconate gel Date: Friday, October 13, 2017 at 2:29:28 PM Author: Jeffrey Lewin <jclewin**At_Symbol_Here**MTU.EDU> |
Next by Date: Subject: Re: [DCHAS-L] Safety Equipment for K-12 Science Classes Date: Fri, 13 Oct 2017 19:16:42 +0000 Author: "Wilhelm, Monique" |
Agreed, the expiration date is not top of mind for many labs . We've found several locations where calcium gluconate was expired and even one conscientious lab that removed the expired calcium gluconate tube that was normally taped above their fume hood so that they could look at the part number while ordering a replacement - but leaving a week-long gap without the tube present.
In the School of Engineering our approach is to use the chemical inventory to identify labs that have HF and to give them calcium gluconate. We manage this as a preventative maintenance program - i.e. the expiration dates are centrally tracked and replacements provided as needed.
Leslie O'Rourke-Garrett
Associate Director, Health and Safety
Stanford School of Engineering
650-206-0226
-----Original Message-----
From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU] On Behalf Of Stuart, Ralph
Sent: Friday, October 13, 2017 9:09 AM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: Re: [DCHAS-L] HF concentration and gluconate gel
> >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
ralph.stuart**At_Symbol_Here**keene.edu
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