I beat the column with the oxidised copper when it is still warm from outside with a glass rod
(carefully) - this is to somehow detach the copper oxide from the walls of the quartz tube.
Then I use some long steel rod and a hammer to push carefully the copper oxide out.
Afterwards I wash the quartz column with HCl, rinse it with deionised water and dry it in an
Most of the time it works, with often reused columns sometimes it does not work - then I
know it's time to throw them away ...
On 15 Jan 2016 at 12:12, GROCKE D.R. wrote:
> 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?