Which Kittly Litter?

londonsean69 · 2nd March 2005, 16:00

Guys and girls

Having just acquired an RB80 clone, I obviously need some rocks for it, but, was just wondering what other peole use or have used. What I would like to know is;

What Sodalime you use
What rebreather you use it in
What other types of sodalime you have tried
Findings, eg. life, dustiness, chanelling?

Cheers

***caveseeker7*** · 3rd March 2005, 16:39

PRISM with Sodasorb.
Steam Machines has the distribution rights for diving grade Sodasorbs (6-12HP and 4-8HP, the former is usually used in PRISMs, the latter in SM1600s). Originally they had testing performed with both Sodasorb and Sofnolime.

Sodasorb is very popular around here due to it competitive price ($99/pail versus $125+/pail for Sofnolime) and used in Inspirations, too. AFAIK it's also what Halcyon uses in the RB80.

Within CE countries you're supposed to use the same absorbant used for certifications, i.e. Sofnolime in APD rigs (and I believe OMG rigs, too) and DiveSorb in Drägers. Use another absorbant and the certification is void.

Duncan Price · 3rd March 2005, 16:51

Quote: (Originally Posted by londonsean69)

What Sodalime you use
What rebreather you use it in
What other types of sodalime you have tried
Findings, eg. life, dustiness, chanelling?

Varous homebuilds.

Sofnolime - both the course and fine stuff. WOB worse with the fine stuff.

WR Grace - coarse - cheap (£30 for 20 kg). Dusty.

Intersurgical sphereasorb. Nice round granules, packs well, little dust - used it on a deep dive with good success. £12.50 for 5 kg can. Useful size to carry around. Get three fills out of two cans so its quite handy.

londonsean69 · 4th March 2005, 12:22

Quote: (Originally Posted by caveseeker7)

Within CE countries you're supposed to use the same absorbant used for certifications, i.e. Sofnolime in APD rigs (and I believe OMG rigs, too) and DiveSorb in Drägers. Use another absorbant and the certification is void.

Good job the unit's not CE certified then

iain-hsm · 14th March 2005, 20:09

Quote: (Originally Posted by caveseeker7)

Use another absorbant and the certification is void.

Dont get us all hung up on CE Stefan while you are lucky enough not to have to. LOL

While it may be true regarding the CE certification it would make better sense if the UK CE approved units led the way and did the decent thing by testing there equipment with all the other available absorbants That way the diver with this information could make an informed choice, then go ahead and use the cheapest absorbant.

Now in order to taylor make your own custom Hot grade the following is required to determin the Sodium Hydroxide content. 1 gram of soda lime in a flask add 20cm3 of water. Heat in a reflux condenser for 30 mins. Add 82 cm3 of methylated spirits neutralized to phenolphthalein with the sodium hydroxide solution and reflux for 1 hour. Allow to cool and pipette 50 cm3 into a flask. Titrate the alkaline extract with hydrochloric acid until colourless.
Calculation is Sodium Hydroxide as NaOH, per cent = V x 0.8

Now you can call your peperami stick Hot! lol

JonnyB · 14th March 2005, 20:18

I use sofnolime for my KISS and i think it is prettyu good, i chosed the 8-12 mesh which gives me another hour on the unit and it is alot less dusty than i thought...

/Jonny

ROB DAVIE · 15th March 2005, 05:15

Sean,

I use the Sofnolime 8-12 grade in my Inspiration. I use the Divematics hydrophobic membrane discs on top and bottom. No dust, and staves off quite a bit of water.

Rob

decoweenie · 15th March 2005, 07:01

Quote: (Originally Posted by londonsean69)

What Sodalime you use
What rebreather you use it in
What other types of sodalime you have tried
Findings, eg. life, dustiness, chanelling?

In the last 7 years, I have used:

Sofnolime (both grades)
Draegersorb
Spherasorb

in these units I owned:

MK-15 (2 units)
Sport-KISS
Classic-KISS
PVR-BASC
BMR-500
XCR (EDO-04 CCR)
Dolphin (SCR and CCR units)
LAR-V
Inspiration (borrowed unit)

Sometimes almost double the rated duration in warmwater dives. See no difference in actual duration. Small grades Sofnolime increases WOB but not dramatically noticeable.

By far, Draegersorb is the dustiest. Spherasorb is the cheapest.

Channeling is most likely due to poor packing technique than type of sorb or canister design. Some units are better to pack very tight, some not so tight.

At the end of the day, if you pack it correctly and follow the recommended (read: conservative) scrubber hours, you won't see any difference.

Of course, this is just my personal opinion formed by diving the units and not by any ANSTI or CO2 lab tests. So consider what you paid for it...

londonsean69 · 15th March 2005, 07:53

Quote: (Originally Posted by decoweenie)

Of course, this is just my personal opinion formed by diving the units and not by any ANSTI or CO2 lab tests. So consider what you paid for it...

Yes, but coming from you that is probably worth more than any lab figures.

Cheers guys, in the end I went with spherasorb, the fine one, because they could deliver it to me on time!!

Haven't really noticed too much effort in the WOB, although till I use the coarse stuff I have nothing to compare it to.

Pelagian · 17th March 2005, 19:34

Use 812 Sofnolime in my Meg, with the standard axial srubber

5.5lbs lasts me up to 6 hours out here in the Carribean, but I wont push that, usually change if I finished a dive around the 4-5 hour mark, and will always begin a tech dive with a fresh stack.

Cheers

Sb

2nd March 2005, 16:00	#1 (permalink)
londonsean69 Rebreather World Writer Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: Sunny Lanzaote Posts: 49	Which sodalime? Guys and girls Having just acquired an RB80 clone, I obviously need some rocks for it, but, was just wondering what other peole use or have used. What I would like to know is; What Sodalime you use What rebreather you use it in What other types of sodalime you have tried Findings, eg. life, dustiness, chanelling? Cheers __________________ __________________________________ Sean Arrowsmith ---------------------------------- From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free. - Jacques Cousteau
(Offline)

3rd March 2005, 16:39	#2 (permalink)
*caveseeker7* Who loves ya, baby Current Rebreather/s: Sport Kiss Other Rebreather/s: Prism Topaz Join Date: Jan 2005 Location: Too far from Neverland Posts: 5,435	PRISM with Sodasorb. Steam Machines has the distribution rights for diving grade Sodasorbs (6-12HP and 4-8HP, the former is usually used in PRISMs, the latter in SM1600s). Originally they had testing performed with both Sodasorb and Sofnolime. Sodasorb is very popular around here due to it competitive price ($99/pail versus $125+/pail for Sofnolime) and used in Inspirations, too. AFAIK it's also what Halcyon uses in the RB80. Within CE countries you're supposed to use the same absorbant used for certifications, i.e. Sofnolime in APD rigs (and I believe OMG rigs, too) and DiveSorb in Drägers. Use another absorbant and the certification is void.
(Offline)

3rd March 2005, 16:51	#3 (permalink)
Duncan Price Sump Monster Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: Wells, Somerset, UK Posts: 336	Quote: (Originally Posted by londonsean69) What Sodalime you use What rebreather you use it in What other types of sodalime you have tried Findings, eg. life, dustiness, chanelling? Varous homebuilds. Sofnolime - both the course and fine stuff. WOB worse with the fine stuff. WR Grace - coarse - cheap (£30 for 20 kg). Dusty. Intersurgical sphereasorb. Nice round granules, packs well, little dust - used it on a deep dive with good success. £12.50 for 5 kg can. Useful size to carry around. Get three fills out of two cans so its quite handy.
(Offline)

4th March 2005, 12:22	#4 (permalink)
londonsean69 Rebreather World Writer Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: Sunny Lanzaote Posts: 49	Quote: (Originally Posted by caveseeker7) Within CE countries you're supposed to use the same absorbant used for certifications, i.e. Sofnolime in APD rigs (and I believe OMG rigs, too) and DiveSorb in Drägers. Use another absorbant and the certification is void. Good job the unit's not CE certified then __________________ __________________________________ Sean Arrowsmith ---------------------------------- From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free. - Jacques Cousteau
(Offline)

14th March 2005, 20:09	#5 (permalink)
iain-hsm Custom Title Allowed! Current Rebreather/s: MK 15.X Other CCR Other SCR Other Rebreather/s: Other CCR Other SCR Join Date: Mar 2005 Location: Loughborough England uk Posts: 347	Quote: (Originally Posted by caveseeker7) Use another absorbant and the certification is void. Dont get us all hung up on CE Stefan while you are lucky enough not to have to. LOL While it may be true regarding the CE certification it would make better sense if the UK CE approved units led the way and did the decent thing by testing there equipment with all the other available absorbants That way the diver with this information could make an informed choice, then go ahead and use the cheapest absorbant. Now in order to taylor make your own custom Hot grade the following is required to determin the Sodium Hydroxide content. 1 gram of soda lime in a flask add 20cm3 of water. Heat in a reflux condenser for 30 mins. Add 82 cm3 of methylated spirits neutralized to phenolphthalein with the sodium hydroxide solution and reflux for 1 hour. Allow to cool and pipette 50 cm3 into a flask. Titrate the alkaline extract with hydrochloric acid until colourless. Calculation is Sodium Hydroxide as NaOH, per cent = V x 0.8 Now you can call your peperami stick Hot! lol
(Offline)

14th March 2005, 20:18	#6 (permalink)
JonnyB Johnny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 962	I use sofnolime for my KISS and i think it is prettyu good, i chosed the 8-12 mesh which gives me another hour on the unit and it is alot less dusty than i thought... /Jonny
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15th March 2005, 05:15	#7 (permalink)
ROB DAVIE Administrator Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: HOUSTON, REPUBLIC OF TEJAS Posts: 1,120	Kitty Litter Sean, I use the Sofnolime 8-12 grade in my Inspiration. I use the Divematics hydrophobic membrane discs on top and bottom. No dust, and staves off quite a bit of water. Rob __________________ [SIZE=2]"CC Rebreathers will become a viable part of tech diving [U]WHEN PIGS FLY[/U]!!"--GI3[/SIZE]
(Offline)

15th March 2005, 07:01	#8 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,510	Quote: (Originally Posted by londonsean69) What Sodalime you use What rebreather you use it in What other types of sodalime you have tried Findings, eg. life, dustiness, chanelling? In the last 7 years, I have used: Sofnolime (both grades) Draegersorb Spherasorb in these units I owned: MK-15 (2 units) Sport-KISS Classic-KISS PVR-BASC BMR-500 XCR (EDO-04 CCR) Dolphin (SCR and CCR units) LAR-V Inspiration (borrowed unit) Sometimes almost double the rated duration in warmwater dives. See no difference in actual duration. Small grades Sofnolime increases WOB but not dramatically noticeable. By far, Draegersorb is the dustiest. Spherasorb is the cheapest. Channeling is most likely due to poor packing technique than type of sorb or canister design. Some units are better to pack very tight, some not so tight. At the end of the day, if you pack it correctly and follow the recommended (read: conservative) scrubber hours, you won't see any difference. Of course, this is just my personal opinion formed by diving the units and not by any ANSTI or CO2 lab tests. So consider what you paid for it...
(Offline)

15th March 2005, 07:53	#9 (permalink)
londonsean69 Rebreather World Writer Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2005 Location: Sunny Lanzaote Posts: 49	Quote: (Originally Posted by decoweenie) Of course, this is just my personal opinion formed by diving the units and not by any ANSTI or CO2 lab tests. So consider what you paid for it... Yes, but coming from you that is probably worth more than any lab figures. Cheers guys, in the end I went with spherasorb, the fine one, because they could deliver it to me on time!! Haven't really noticed too much effort in the WOB, although till I use the coarse stuff I have nothing to compare it to. __________________ __________________________________ Sean Arrowsmith ---------------------------------- From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free. - Jacques Cousteau
(Offline)

17th March 2005, 19:34	#10 (permalink)
Pelagian Multi-Circuit Meg Monkey! Current Rebreather/s: Megalodon Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Optima Join Date: Feb 2005 Location: Leeds, England Posts: 275	Sorb Use 812 Sofnolime in my Meg, with the standard axial srubber 5.5lbs lasts me up to 6 hours out here in the Carribean, but I wont push that, usually change if I finished a dive around the 4-5 hour mark, and will always begin a tech dive with a fresh stack. Cheers Sb
(Offline)

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