On Sun, 5 Jan 2003 01:40:31 +0100, "wiggywacker"
wrote:

Hello!
I've finally bought myself a CO2 bottle / regulator..... and I need to have
it filled up.
A shopkeeper told me I have to put the bottle into the freezer first....can
you please verify this? and give me more detailed instructions on doing
this?



CO2 expands with heat. If the tank is cold, it's easier to get a
complete fill. In paintball (where small CO2 bottles are used), the
common method is to rapidly release the CO2 that remains in the bottle
to be filled, which REALLY cools the CO2 bottle. If the tank is
completely empty, then the shop will partially fill it, then release
that CO2 to chill the bottle.



Chuck Gadd
http://www.csd.net/~cgadd/aqua