There has been a lot of discussion about copper packing on the lists
recently. Mike Nixon and I have also been experimenting with it,
and it does a very nice job. Unfortunately, the most commonly
available pure copper packing material (The "Chore Boy" scrubber) is
expensive! They cost US $1.40 each, and it takes about 36 of them
to pack a 1.3 meter 50 mm diameter column.
After a year of searching, The Amphora Society has found a source of
knitted pure copper mesh in Germany. This material rolls up very
easily to make a highly structured packing for small columns, and
about one pound is enough to pack that same 1.3 meter column. We
have tested samples and it is not only much easier to insert and
extract than the scrubbers, but works really well as packing.
The minimum order for this material from the supplier is 440 pounds,
which is a lot of copper! We have ordered a batch, and expect it to
arrive in the next couple of weeks. Since the minimum order is a
lot more than we need to keep on hand, we'd like to share the
benefits of our search. If you'd like to experiment with pure
copper structured packing, we'd be glad to let you have it for US
$10.00 a pound plus the cost of mailing it to you (ranges from US
$3.50 to $9.00 depending on country for a Priority Flat Rate
envelope, which can hold up to two pounds). This is half the cost
we will be selling it for on our web site.
If you're interested, please email me at mikemccaw@amphora-
society.com and tell me how many pounds you'd like. As soon as it
has arrived, we'll send you an email letting you know. At that
time, you can do the credit card thing with Mike Nixon on our
website, and you should have it within a week.