Packing order, copper and rock.

[BikinArak]

I plan to pack a 4 ft 2 inch SS reflux column, to hand I have a roll copper packing, a 100g pack of copper saddles and crushed volcanic rock similar to scoria. I think more copper packing would be better but without it possibly genuine stainless scourers might be available in lieu of rock.

1- Just wondering if its best to put the copper at the bottom or the top?

2- I have a supply of thin wall 10 mm drawn copper tube, any advantage in packing a bundle of these maybe 6 to 10 inches long in the column. more copper contact for rising vapor but maybe not so good for reflux?

[Marbled]

The copper goes in first in the T500, so the top.
As for rock, no comment unless it's classic stuff mainly from the 60's - 80's.....then I can boast an extensive knowledge.

R&FR

[Sam.]

I would put the rock on the bottom as this is going to get the dirtiest and you can throw it out at a small cost :handgestures-thumbupleft:

[BikinArak]

Cheers guys,

It looks like I have found a source of stainless scrubbers that prove to be stainless, better option than than rocks from what I have read. So should be the same deal, put them under the copper.

[Undertaker]

I'm using copper wire in place of scrubbies in my reflux build.

cheers Phil

[BikinArak]

Yes i think I should be filling with copper as well but It takes some organizing to get it here, on the other hand the stainless ones are local and $3 a dozen, so they will have to suffice, for now. I have 10 mtrs of paper tin copper tube here, considering chopping it up into saddles.