Here's the guidance we follow as UC Davis: https://safetyservices.ucdavis.edu/safetynet/ethidium-bromide-solutions-detoxification
Hope this helps.
Debbie M. Decker, CCHO, ACS Fellow
Past Chair, Division of Chemical Health and Safety
Councilor and Programming Co-Chair
University of California, Davis
Birkett's hypothesis: "Any chemical reaction
that proceeds smoothly under normal conditions,
can proceed violently in the presence of an idiot."
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
On Behalf Of Penny Manisco
Sent: Thursday, August 9, 2018 4:38 PM
Subject: [DCHAS-L] Dilute Ethidium Bromide Disposal in California
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.
Chemical Hygiene Officer
Harvey Mudd College
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