Sorb-how long do u keep it between dives?

**Dave Sutton** · 31st January 2008, 12:41

Quote: (Originally Posted by Ben Field)

I ask because lots of people do this- go diving, cap it in the unit, dive it again the next day (its been sat 20+hrs on the boat) as there is no noticable incident rate directly attributed to this it "must" be okay, I'd just like some science and numbers thats all

There isn't going to be any number available, so just forget it.

Training is easiest when we teach people not to use 'judgement', because we cannot TEACH it. So.... "BIN IT" is what is taught . And if you do that... you will NEVER have a problem. So that's that! It's what I will teach you if you come and take a course. End of discussion.

The 'sorb has "x" adsorbant potential. It doesn't care if that is spread out over 1 day or several....

The unused portion of the scrubber bed does not 'react' with the used fraction.

The scrubber *itself* can be harmed *over the long duration* by the wetted powder inside it... it can SCREW UP anodizing, and cause corrosion to metal bits, etc. This alone is sufficient reason to dump the crap if it's going to sit partially used for a long period.

The "Next Dive Planned" impacts my *personal* judgement as to use as well... ANY ocean dive gets a fresh scrubber if it's a week later. For a pool training dive, or a quarry training dive? I might be inclined to use it a little longer.

The next day on a boat? That's a no brainer.

Dave

.

Ben Field · 31st January 2008, 13:42

Quote: (Originally Posted by Dave Sutton)

The next day on a boat? That's a no brainer.

You would have thought so, Molecular Products guy said- "no, don't do it" but of course they want you to use 2.5kilos every day as they sell the stuff.

**mattmexico** · 31st January 2008, 16:00

Quote: (Originally Posted by jiseson)

I am curious how long folks retain a partially used sorb from one day to another? days? weeks? years??

yo

Here are some links to related polls you might find interesting

http://www.rebreatherworld.com/scrub...overnight.html

http://www.rebreatherworld.com/rebre...cannister.html

greetings
Matt

31st January 2008, 12:41	#21 (permalink)
Dave Sutton Diveshop of Horrors Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Evolution Megalodon rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,907	Re: Sorb-how long do u keep it between dives? Quote: (Originally Posted by Ben Field) I ask because lots of people do this- go diving, cap it in the unit, dive it again the next day (its been sat 20+hrs on the boat) as there is no noticable incident rate directly attributed to this it "must" be okay, I'd just like some science and numbers thats all There isn't going to be any number available, so just forget it. Training is easiest when we teach people not to use 'judgement', because we cannot TEACH it. So.... "BIN IT" is what is taught . And if you do that... you will NEVER have a problem. So that's that! It's what I will teach you if you come and take a course. End of discussion. The 'sorb has "x" adsorbant potential. It doesn't care if that is spread out over 1 day or several.... The unused portion of the scrubber bed does not 'react' with the used fraction. The scrubber itself can be harmed over the long duration by the wetted powder inside it... it can SCREW UP anodizing, and cause corrosion to metal bits, etc. This alone is sufficient reason to dump the crap if it's going to sit partially used for a long period. The "Next Dive Planned" impacts my personal judgement as to use as well... ANY ocean dive gets a fresh scrubber if it's a week later. For a pool training dive, or a quarry training dive? I might be inclined to use it a little longer. The next day on a boat? That's a no brainer. Dave . __________________ "Silent Diving with No Bubbles and No Politics".... www.nobubblediving.com
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31st January 2008, 13:42	#22 (permalink)
Ben Field CK+Shearwater Current Rebreather/s: Classic Kiss Other Rebreather/s: Sport Kiss Join Date: Aug 2005 Location: London, England Posts: 1,775	Re: Sorb-how long do u keep it between dives? Quote: (Originally Posted by Dave Sutton) The next day on a boat? That's a no brainer. You would have thought so, Molecular Products guy said- "no, don't do it" but of course they want you to use 2.5kilos every day as they sell the stuff. __________________ Know your PPO2, Pre-breath, Use checklists, Validate cells at 6mtrs, Use pure O2 at or near surface, Use a BOV, Don't dive Solo, Change Slime and Cells as recommended by Manufacturer and RTFM! Beware Fridge Suck! www.hugsac.org.uk
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31st January 2008, 16:00	#23 (permalink)
mattmexico PROTEC MEXICO Current Rebreather/s: Megalodon Classic Kiss Optima RB80 / Clone Other Rebreather/s: Inspiration Classic Evolution Prism Topaz Sport Kiss RB80 / Clone Join Date: Aug 2005 Location: Mexico, Q.Roo, Playa del Carmen Posts: 773	Re: Sorb-how long do u keep it between dives? Quote: (Originally Posted by jiseson) I am curious how long folks retain a partially used sorb from one day to another? days? weeks? years?? yo Here are some links to related polls you might find interesting http://www.rebreatherworld.com/scrub...overnight.html http://www.rebreatherworld.com/rebre...cannister.html greetings Matt __________________ N 20' 37.617' W 87' 04.693' www.andreaswmatthes.com
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