Thanks Jon and Vance, I have copies of all that but there is nothing on comparison of actual performance of the Sodasorb v's Sofnalime or other suppliers and their actual absorption and efficiencies of the scrubbers. I have some info from the manufacturers but as the weight is important so becomes the importance of efficiency etc. Also the fan performance drops off when you blow through the granules and that becomes a bit complicated to calculate. Resistance figures of inches water drop against air speed would be great to have. I will try and contact the suppliers to see if those figures are available. I have this old Comsub and it has a 3" scroll blower which has a fair capacity but is split into parallel lines into two separate packs and by the time it comes out it is fairly gentle. The packs are 8" diameter and about 6" deep. Cant see the granules to check on colour so might try and do a clear window in one of the packs. Chs Hugh -----Original Message----- From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Jon Wallace Sent: 15 July 2009 14:10 To: personal_submersibles@psubs.org Subject: Re: [PSUBS-MAILIST] Co2 Scrubbing Resources & Reference -> Design & Fabrication -> Design Tools -> Life Support vbra676539@aol.com wrote: > There is an excellent white paper on life support from Phil Nuytten on > the Psubs web page somewhere. > Vance > > ************************************************************************ ************************************************************************ ************************************************************************ The personal submersibles mailing list complies with the US Federal CAN-SPAM Act of 2003. Your email address appears in our database because either you, or someone you know, requested you receive messages from our organization. If you want to be removed from this mailing list simply click on the link below or send a blank email message to: removeme-personal_submersibles@psubs.org Removal of your email address from this mailing list occurs by an automated process and should be complete within five minutes of our server receiving your request. PSUBS.ORG PO Box 53 Weare, NH 03281 603-529-1100 ************************************************************************ ************************************************************************ ************************************************************************ __________ Information from ESET NOD32 Antivirus, version of virus signature database 4243 (20090714) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 4247 (20090715) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ************************************************************************ ************************************************************************ ************************************************************************ The personal submersibles mailing list complies with the US Federal CAN-SPAM Act of 2003. Your email address appears in our database because either you, or someone you know, requested you receive messages from our organization. If you want to be removed from this mailing list simply click on the link below or send a blank email message to: removeme-personal_submersibles@psubs.org Removal of your email address from this mailing list occurs by an automated process and should be complete within five minutes of our server receiving your request. PSUBS.ORG PO Box 53 Weare, NH 03281 603-529-1100 ************************************************************************ ************************************************************************ ************************************************************************