Laurie:

Like John  indicated, I also work in a production laboratory and we drum all our HPLC waste for removal by a licensed waste hauler.

Jerry King

From: "Hung" <000003225480afd0-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Sent: Tuesday, October 4, 2016 1:25:05 PM
Subject: Re: [DCHAS-L] HPLC solvent disposal

Hello Laurie,

My experience is that it is never okay to dump chemicals into the sink. I work in a production lab  and we currently put all hplc waste in a grounded 55 gallon drums and an approved waste company pick it up to dispose it properly. By law we don't have the authority to treat wastes like waste companies do. I hope this helps.

John Nguyen

On Oct 4, 2016 11:59 AM, Laurie Yoder <laurie.yoder**At_Symbol_Here**EMU.EDU> wrote:

>

> We have a research group that wants to begin a HPLC project using tetrafluoroacetic acid/acetonitrile mix (diluted to 40% in water) as the solvent. The student working on the project has used this procedure at another institution and said they dumped the waste solvent down the drain. Really? I thought this would still have some characteristic hazard. Does anyone else have experience with this mixture, and how do you dispose of it properly?
>
> --
> Laurie M. Yoder
> Assistant Professor of Chemistry and Chemical Hygiene Officer
> Eastern Mennonite University
> 1200 Park Road
> Harrisonburg, VA 22802
> --- This e-mail is from DCHAS-L, the e-mail list of the ACS Division of Chemical Health and Safety. For more information about the list, contact the Divisional secretary at secretary**At_Symbol_Here**dchas.org

--- This e-mail is from DCHAS-L, the e-mail list of the ACS Division of Chemical Health and Safety. For more information about the list, contact the Divisional secretary at secretary**At_Symbol_Here**dchas.org