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Previous by Date: Subject: Re: question Date: Mon, 20 Jun 2011 14:05:21 -0400 Author: ILPI |
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Back in my radiochemistry days, we used a conc nitric/sulphuric acid bath followed by a high resistivity (>18 MegaOhm) water bath for highly meta l-sensitive radiochemistry. That eventually etches and embrittles the glass , and it is extremely corrosive, but in my experience it does at least as well as a base bath for protein & metals removal. Thanks, Todd Perkins Airgas Mid America - Sent from my mobile phone On Jun 20, 2011 11:24 AM, Demer, Frank R - (demer) <demer**At_Symbol_Here**EMAIL.ARIZONA. EDU> wrote: One of our labs had a base bath fire over the weekend. A researcher forgot there was alcohol in the bath and tried to extinguish a match, used to light a propane torch, in the bath. Besides the obvious problem of using matches instead of a striker and the questionable use of a propan e torch to dry glassware for a moisture sensitive reaction, can anyone reco mmend an alternative to a base bath containing KOH solution, iso-propanol and ethanol? Frank R. Demer, MS, CIH, CSPHealth Safety Officer Industrial Hygiene and SafetyUniversity of ArizonaDepartment of Risk Manage ment Services Phone: 520.621.3585Fax: 520.621.3706Email: demer**At_Symbol_Here**email.arizona.eduMailing Address: P.O. Box 210300, Tucson, AZ 85721-0300Street Address: 220 W. 6th St., Tucson, AZ 85701 (2nd floor, East Bldg.)Web Address: risk.arizona.eduBack in my radiochemistry days, we used a conc nitric/sulphuric acid bath followed by a high resistivity (>18 MegaOhm) water bath for highly meta l-sensitive radiochemistry. That eventually etches and embrittles the glass , and it is extremely corrosive, but in my experience it does at least as well as a base bath for protein & metals removal.
< div style="font-family: arial, sans-serif; font-size: 12px;color: #999999 ;">Thanks,
Todd Perkins
Airgas Mid America
- Sent from my mobi le phone
On Jun 20, 2011 11:24 AM, Demer, Frank R - (demer) <demer**At_Symbol_Here**EMAIL.ARIZONA.EDU> wrote:One of our labs had a base bath fire over the weekend. A researcher forgot there was alcohol in the bath and tried to extinguish a match, used to light a propa ne torch, in the bath. Besides the obvious problem of using matches instead of a striker and the questionable use of a propane torch to dry gl assware for a moisture sensitive reaction, can anyone recommend an alternat ive to a base bath containing KOH solution, iso-propanol and ethanol? ;
Frank R. Demer, MS, CIH, CSP
H ealth Safety Officer
Industrial Hygien e and Safety
University of Arizona
Department of Risk Management Services
Phone: 520.621.3585
Fax: 520.621.3706
Email: demer**At_Symbol_Here**email. arizona.edu
Mailing Address : P.O. Box 210300, Tucson, AZ 85721-0300
Street Address: 220 W. 6th St., Tucson, AZ 85701 (2nd floor, East Bldg.)
Web Address: risk.arizona.edu
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