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joshhan2000 · 21st February 2006, 03:10

Vacuum packing is a good idea. As a general rule you can use HDPE for packing of the sorb but if you use LDPE will work to. I do not recommend that you try not to suck all the air out because you lower the vapor pressure you lower the boiling point of the water in the sorb. Remember that the sorb is about 15 to 22% water. So if you decide that you want vacuum pack the canister before you dive you should take it out and allow breathing time. This will allow for the sorb to pick up some of the moisture from the outside. You might want to pre breath the sorb and make sure it turn color. As for how long you can leave it pack I am not sure. I am going to go why out on a limb but if you use the right packing method you should be able to leave it pack for a long time until used it The other thing to remember that the reaction for the sorb goes though it make water so even if you dry it out a little you should be able to make it work. In no way is this proper advise and should be taken as just that a guess. If you give me more details on the method you will use to pack the sorb I would be able to tell you more.

www.sv.vt.edu/classes/MSE2094_NoteBook/ 96ClassProj/examples/triplpt.ht

www.dynalabcorp.com/files/ Use%20and%20Care%20of%20Plastics.pdf

21st February 2006, 03:10	#3 (permalink)
joshhan2000 New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Dec 2005 Location: olympia wa usa Posts: 46	Re: Vaccum packing canisters Vacuum packing is a good idea. As a general rule you can use HDPE for packing of the sorb but if you use LDPE will work to. I do not recommend that you try not to suck all the air out because you lower the vapor pressure you lower the boiling point of the water in the sorb. Remember that the sorb is about 15 to 22% water. So if you decide that you want vacuum pack the canister before you dive you should take it out and allow breathing time. This will allow for the sorb to pick up some of the moisture from the outside. You might want to pre breath the sorb and make sure it turn color. As for how long you can leave it pack I am not sure. I am going to go why out on a limb but if you use the right packing method you should be able to leave it pack for a long time until used it The other thing to remember that the reaction for the sorb goes though it make water so even if you dry it out a little you should be able to make it work. In no way is this proper advise and should be taken as just that a guess. If you give me more details on the method you will use to pack the sorb I would be able to tell you more. www.sv.vt.edu/classes/MSE2094_NoteBook/ 96ClassProj/examples/triplpt.ht www.dynalabcorp.com/files/ Use%20and%20Care%20of%20Plastics.pdf
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