My lab manager likes removing the copper with the leg extension off of a tripod (which was the handiest object laying around the lab when we started doing this). We also pack our copper into the column in three segments separated by quartz wool. That supposedly also helps with disrupting preferential flow paths of gas through the packed column.
> On Jan 15, 2016, at 7:49 AM, Michener, Robert H <[log in to unmask]> wrote:
> Hi Darren,
> Stick the column in the freezer overnight, then use the reamer to push out the copper. It works surprisingly well!
> Robert Michener
> IRMS Laboratory Manager
> Boston University Stable Isotope Laboratory
> Department of Biology
> 5 Cummington Mall
> Boston, MA 02215
> Voice: 617-353-6980
> Fax: 617-353-6340
> Email: [log in to unmask]
> Website: www.bu.edu/sil/
> "You are what you eat, plus a few permil!"
> -----Original Message-----
> From: Stable Isotope Geochemistry [mailto:[log in to unmask]] On Behalf Of GROCKE D.R.
> Sent: Friday, January 15, 2016 7:13 AM
> To: [log in to unmask]
> Subject: [ISOGEOCHEM] Removing reduced copper
> just a quick question in the hope of saving costs:
> does anyone know an easy way to remove the oxidised copper from the quartz column; so that the quartz column can be re-used?