Half-packing sorb -- Possible, or deadly?

[Pavao]

 

[211ratsbud]

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How did you get that through with no words in the body?

 

[Pavao]

Just posted it like any post .

Btw, which unit are you referring to that has so many possible combinations, or is it cross matching different units of same manufacturer?

I don’t really pay much attention to what all current (or past) units are about, I’ve selected mine and have no desire to change so no incentive to look elsewhere, but just curious if the possibilities you posted aren’t easily solved by design, and/or what significant gain is really offered by so many possible combinations?

Like on the Fathom, we could have, say, the 9/6/3 lb scrubbers, but why? If I’m doing a dive where I’d really need 6 lbs, going to 9 is negligible in term of “wasted” sorb. Likewise, if I’d only need 3lbs, using the existing 5.5lbs is a negligible “waste”. The cost of all the extra scrubbers/spacers is not negligible, I don’t even have the second, let alone having to get a 3rd+.

 

[211ratsbud]

Just posted it like any post .

Btw, which unit are you referring to that has so many possible combinations, or is it cross matching different units of same manufacturer?

I don’t really pay much attention to what all current (or past) units are about, I’ve selected mine and have no desire to change so no incentive to look elsewhere, but just curious if the possibilities you posted aren’t easily solved by design, and/or what significant gain is really offered by so many possible combinations?

Like on the Fathom, we could have, say, the 9/6/3 lb scrubbers, but why? If I’m doing a dive where I’d really need 6 lbs, going to 9 is negligible in term of “wasted” sorb. Likewise, if I’d only need 3lbs, using the existing 5.5lbs is a negligible “waste”. The cost of all the extra scrubbers/spacers is not negligible, I don’t even have the second, let alone having to get a 3rd+.

The IQ sub xccr, subgravity defender, and jergensen Marine hammerhead all have at least two different canister sizes each that are common. There is four different scrubber sizes available for the hammerhead units, some of them or most of them fit into the xccr which are directly compatible by manufacturer specs.

ISC has a mini, cave, standard, and tall canister in their inventory. With similar scrubber specifications available.

There's three or four different spacers offered for both manufacturers.

And since they are designed based on the same units, a scrubbers from IQ sub work in a meg, and visa versa.

I cut my canister a custom length for my needs and printed my own spacer.

The math and how they add up to the right stack height is extremely simple. Measure the depth of a canister measure the stack height to the bottom of the lid a little subtraction and voila.

 

[Pavao]

Yes, I’m aware of those, and the Fathom can be included in that list too to some extent.
The math is even simpler than that, at least if you have a scrubber that needs no spacer, like I do, size of spacer would be difference between big scrubber (no spacer) and shorter scrubber.

 

[211ratsbud]

Yes, I’m aware of those, and the Fathom can be included in that list too to some extent.
The math is even simpler than that, at least if you have a scrubber that needs no spacer, like I do, size of spacer would be difference between big scrubber (no spacer) and shorter scrubber.

Certainly, but you asked and I provided the examples . Some of those units listed above also have no spacer combinations or ones that use only the built in 10mm spacer in the can. Going to the original point, this would make it impossible, and very expensive to include the spacer built into the scrubber itself.

Would end up with a whole bunch of SKU's for scrubbers built for specific canister lengths. More sku usually means more money somewhere

I am familiar with the fathom arrangement.

I used a no spacer 8lb Meg scrubber for a while, before switching to a iq scrubber that was also 8lb and the spacer requirement changed.

 

[mr_v]

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I give up. How do you solve this?

 

[nadwidny]

I hate to be that guy on the internet attacking the premise without answering the question, but what's the issue with storing one packed scrubber for use over a couple of short dives? Why would it be so "impractical" to leave it sealed in the unit or a labeled drybag?

It's not. It's done all the time by a lot of divers.

 

[Dr Simon Mitchell]

Your question is a good one, but the original question is more theoretical than anything. Odds are that a sealed-up sorb container would stay good/good enough.

But let's assume something like...um...it's wintertime, and our diver is landlocked. He's only able to dive when the local quarry is open, and it's on an erratic winter schedule, so he can only go dive once every two months.

Or perhaps something is going on in the diver's professional or personal life that makes it impossible to dive regularly or predict when his next opportunity to dive will crop up, but he still wants to get wet and keep his RB skills fresh.

Again, it's mostly a theoretical question, but the use case is semi-plausible.

Hello,

Like many discussions, if you look for scientific evidence you can often find it.

We studied and published the behavior of partially used CO2 absorbent left in the canister for a month. I suspect there would be little or no difference at two months so long as you sealed it adequately.

I have attached the publication here.

Simon M

 

[kensuf]

Radial scrubbers, probably not. Axial scrubbers? It depends. The SF2 can be partially packed, the lexan Meg axial can't.