How much you pay Lime for the Kg ?

The Purist

Tried to get hold of a sample of Spherasorb recently from Intersurgical - their rep was pretty offhand - "You're not a diver are you? We've sent out loads of samples to divers and never got an order, so we can only send you a litre"... WTF use is a litre to assess whether I want to switch to their product???? I'll stick with 797 Sofnolime for now ta...

Joseph Grech

What do you think if we get a group together and buy the lime in a bigger quantity to reduce the price.
We would first agree if Sofnolime or Spherasorb, see how many people and kilos needed and later place the order.

lizardland

I pay £49 a 20kg keg from Divex but there's VAT and shipping (24hr delivery my arse), works out around £75.

Padowan

Sefa-sorb and Spherasorb are 2 totally different products from 2 different manufacturers. I've not used either in my Rebreather, but have "tactile" experience of both...

Spherasorb is made by Intersurgical and is like little balls, which apparently makes it a more reliable pack, it's also a lot less dusty that Sofnolime.

Sefa sorb is made by Molecular products, looke like the sweepings from their production floor! From what I've seen it looks like part coarse grade Sofnolime, and part fine grade, all mixed together.

As I said, not used either, but have seen both.....

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narked at 90

padowan is right on the nail,sefa sorb looks like the the misshapes from there two grades just thrown into a new tub given a new name and hey presto!

i've been using it for 6mounths now and have found it to be fine it's a little more dusty than just 797 but nothing to bad and at the prise i got it at im well happy
i've also used spheresorb which i found very nice from WOB to packing,
but then i got sefa sorb and im sticking with that as there has been no problems.
intersegical used to send out 10kg free samples but im guessing thay are getting pissed as i have sent loads of people for a free be!
kind regards john routley

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Sutty

I just ordered a dozen 5Kg jerricans of Spherasorb at £11 plus VAT per jerrican carriage free, direct from intersurgical. Rep was quite helpful and gave me a large free sample 1st but we use it at work all the time so he was probably just keeping us sweet.

It does pack easily, and hardly any dust.

schford

I so wish we had some place we could run real testing on different types of Co2 absorbant.

Stuart

AD_ward9

This fits well with the Open Revolution initiative that is planned for launch during this month by Rebreather World.

As our design team will be making an Open Revolution submission, if you send us some samples of what you want tested, we will load up a Micropore (Dolphin/Azimuth/Optima) cannister and an Inspiration cartridge with it, when the independent lab is doing the CE approval testing for the Deep Life Open Revolution contribution. We will publish the results, all of them. It will take a few months before we are ready, but you get the results in Spring 06. The independent lab is a military lab. We need 160Kg of material per test run (for the different rates and pressure in EN14143).

Alternatively, send some samples, and we run our own lab tests on it, and can give you results for the life of the different materials in terms of life before CO2 breakthrough, pressure drop with various flow rates, and the temperature distribution at 18 points through the scrubber during the test. We run tests with a human, and with a machine. Machine is more stable, obviously, and can do work rates the human cannot. This route is faster: we run it next time we do a scrubber test. We have finished a whole load of scrubber tests just a few months ago, so the next lot would be in November or December. Scrubber tests take quite a lot of staff time, so are too expensive to do as a special earlier. We can do this with much less material: a couple of fills should give you enough data.

These tests would be with the Deep Life scrubber caps for Inspiration and Micropore cannisters. For Micropore, the results should be identical to using the original Micropore cap, but on the Inspiration gas flow will be slightly different to the original. The 3D CAD flow results will tell you just how different: the layout is adjusted to make them the same in flow terms during the design stage (backpressure and flow distribution though the scrubber), but there are reasons why they cannot be identical: the differences should not be significant.

We have tubs of Sofnolime and Micropore ExtendAir cartridges already, so no need to send them: we like the safety aspect of ExtendAir (water tolerance, no tunnelling, big safety margins on quoted scrubber life) so we will run a test with the ExtendAir cartridges anyway.

Third option: we have some friends in a few scrubber material companies, and might be able to arrange a test earlier. I will ask. It is expensive for them to do as well, but they run these sort of tests much more frequently than we do.

Cheers,
Alex

aquaxel

in cyprus:

797 costs 191 euro for 20kg = 9.57 euro / 1 kg

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rgds aquaxel

www.aquatec-innerspace.com

wizbang

Hi Ad_Ward9, that sounds great. I could gather some sheckles from the guys around oz to get you some samples of stuff relevant to us here. (hopefully transfer the money and you can purchase there so we don't money in freight etc.)

My preference would be for the first option but the second option should also be ok.
IMHO it would make a big difference if we could peruse the testing procedure before to see what people think and see if it address' various people's issues / ideas of testing.

Better to bitch and winge before and not get involved then to hvae people try and ridicule the results afterwards. "put up or shut up" type thing.

Thanks for your efforts Wiz