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Disposal of Hoechst waste

Rolf Marteijn rolf at lx.student.wau.nl
Mon Feb 17 14:28:56 EST 1997


Something that removes much of EtBr from solutions -and probably also 
other waste like BBI- is the following:

Store the solutions containing EtBr in some big bottle (one of those big 
ones (2500ml) in which eg EtOH comes). 
When the bottle is almost full, place a stirrbar in there (have one 
stirbar reserved for those purposes), place a 'teabag' with activated 
charcoal in there (can't find a dealer right now, but there are several) 
and stir it eg over a weekend. The teabag can be stored with the 
chemical waste and the water can go in the sink.

> I would suggest to put it to the organic waste to be incinerated.
> Since there are now some colum-devices to extract ethidium bromide
> from solns, they might be effective for BBI, too. But I haven't tried
> this yet. If you have one handy, it might be easy to prove it.
> Passing the soln after neutralizing through a strong anionic resin
> (-SO3) should remove the dye, too.

Just my .02,

Rolf Marteijn

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