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Subject: [DCHAS-L] Laboratory Safety @chemsafetyboard?
Date: Wednesday, August 8, 2018 at 7:33:00 AM
Author: DCHAS Membership Chair <membership**At_Symbol_Here**DCHAS.ORG> 		Next by Date:
Subject: Re: [DCHAS-L] Dilute Ethidium Bromide Disposal in California
Date: Fri, 10 Aug 2018 00:04:01 +0000
Author: Debbie M. Decker

From: Penny Manisco <pmanisco**At_Symbol_Here**G.HMC.EDU>
Subject: [DCHAS-L] Dilute Ethidium Bromide Disposal in California
Date: Thu, 9 Aug 2018 16:37:42 -0700
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: CADJGnymF3jcWWYP=FBkPNMq+1YB+OnqkB49+J5ZSpGNN6Zx1CA**At_Symbol_Here**mail.gmail.com


Hello All,

There seems to be varying opinion on how to dispose of very dilute solutions of ethidium bromide. The concentration in question is 0.5 micrograms/ml of buffer. By hazardous waste definition, this would not be considered a hazardous waste, but I believe some of our California universities and colleges recommend filtration of the ethidium bromide before disposal at any concentration.

Any guidance would be very much appreciated.

Sincerely,

--
Penny Manisco,
Chemical Hygiene Officer
Harvey Mudd College

(909)6074217
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