>>which, of course means that approximately 1156 l of CO2 are in a 5 lb bottle. I'm not having a good day. That should be 'in a 1 lb bottle'. _________________________________________________________ | | | |Michael Irlbeck | u7211aa at sunmail_lrz-muenchen.de| |Dept. of Physiology | mik at physiol_med.uni-muenchen.de| |University of Munich | CIS:100277,343 | |_______________________|_________________________________|