From: Wayne Wolsey <wolsey**At_Symbol_Here**macalester.edu>
Subject: Re: [DCHAS-L] Info request
Date: Wed, 6 Apr 2016 12:20:05 -0500
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: CALSaknNqVfWeXJixBRF2P826H7nPFe_yoW-6MOPbOeE5N1mwGg**At_Symbol_Here**mail.gmail.com
In-Reply-To


Mercuric iodide, a low solubility compound, has been frequently used as a preservative for freshly prepared starch solutions, as used in iodometric titrations.

Wayne Wolsey
Professor Emeritus
Macalester College
St. Paul, MN

On Wed, Apr 6, 2016 at 8:48 AM, William Peairs <wpeairs**At_Symbol_Here**gmail.com> wrote:
A number of our environmental scientists use Mercuric Chloride to prevent bacterial growth in water samples. Thankfully they are good about properly disposing of solutions containing the HgCl2. To my knowledge, we haven't had any calls from the EPA about this.

On Wed, Apr 6, 2016 at 7:51 AM, Yanchisin, Mark <mark**At_Symbol_Here**ehs.ufl.edu> wrote:
Hi all- We had an info request which has led to a conference call with EPA about solutions in use our labs that use mercury as a preservative. It seems like this is an "info fishing" call and has us concerned as to the reasoning for it. Has anyone had this request yet?

Besides thimerosal, anyone else know of any other solutions that would have mercury as a preservative?

As always- Thank you for your help and support!


Mark Yanchisin
Coordinator for Clinical and Laboratory Safety Programs
Environmental Health and Safety
University of Florida
POB 112190 Bldg 179 Newell Dr.
Gainesville, Fl 32611-2190
O- 352-392-1591
F- 352-392-3647
Mark**At_Symbol_Here**ehs.ufl.edu

"Just because you are in compliance doesn't mean you are out of danger." Mike Rowe "Deadliest Catch"


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