RogueRose
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3A seives (and others 4A, 5a, x11, x13 and more) - about $6/lb
i've found a place in the states that sells these in powder, beads and pellets. They offer different sizes of rods and pellets and the prices are the
same on all sizes.
The company I'm working with is pretty expensive until quantities of 25lbs where it is about $140-160 depending upon the type. 50 lbs was $265-305 so
it wasn't a big discount above 25 lbs. Once you get to 55kg (~110 lbs) the prices dropped nicely but I didn't get quotes.
This is a supplier for some of the major medical O2 manufactures and it is the same product they sell them, so it is high quality even though it isn't
sold by an expensive chem company brand name.
Prices on Ebay are $10-25/lb + shipping and the lower prices are from china and have had mixed reviews in performance. Everything at this company is
shipped from the SE USA.
I know that no one is going to buy the larger quantities unless you have some very specific purposes, such as I do for one of the types (5A) and 3A.
I will probably be buying 25 lbs at least of 5A sometime in the future and some of the other ones offered.
I was wondering if there is much desire to buy a few lbs of different types of seives/zeolites. The 3A are great for drying ethanol and other
solvents. I can make a list of what each seive can be used for.
If I can get enough interest in buying a few lbs per person, I'd be happy to buy in bulk and then ship them out to buyers.
I wouldn't think I would be ordering before mid June so if anyone has interest in this they have some time to look into it and decide if they want to
go into a group buy.
Feel free to message me if you have questions.
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carrant
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I would be interested in at least 2lbs of 3A.
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RogueRose
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Would you have a preference of the type - spheres, pellets or powder?
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CharlieA
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I would be interested in a kg of 3A (pellets or spheres, not powder), and possibly another size. I assume shipping cost will be separate.
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carrant
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Opps, sorry I neglected to specify the type, thank you for asking!
I would prefer either spheres or pellets.
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adk
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Is it a US manufactured product? I have had problems with sieves sourced in China.
Cheers,
A
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Elemental Phosphorus
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I'd be interested in 2lbs of 3A molecular sieves.
Edit: In sphere or pellet form.
[Edited on 14-5-2017 by Elemental Phosphorus]
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BuzzKillerOfFire
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I would be interested in 2lbs of 3a, either sphere or pellet form.
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AlChemicalLife
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I just need it for drying solvents so put me down for 1lb of which ever would be best for solvent drying ,, I think that is 3a spheres
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XeonTheMGPony
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Any news on this?
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katy
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Interested
I'm interested as well.
Thanks,
Katy
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Plunkett
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Also interested in 1 lb of 3A
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Velzee
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Quote: Originally posted by CharlieA  | | I would be interested in a kg of 3A (pellets or spheres, not powder), and possibly another size. I assume shipping cost will be separate.
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As am I.
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byko3y
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I've never heard about good source of sieves from china. Good 3A sieves are hard to get and cost at least 4 $/lbs.
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Texium
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Not sure why everyone is jumping at 3Å and nobody seems to be interested in 4Å. 3Å is necessary for making absolute ethanol, but overkill for
drying of other solvents such as DCM, DMF, Et2O, etc. and are more of a pain to regenerate. 4Å are what I use at work most for solvent
drying, and they work great.
That being said, I don't have any molecular sieves at home, so I'd be interested in buying 500g of 3Å and a kg of 4Å if this deal happens.
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RogueRose
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It doesn't seem that there is quite enough to order a 25kg batch unless there are some people who want larger lots. If the project I was working on
goes through, I'll let people know about the order.
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JJay
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If this does happen, I would like some 4A sieves. They would be especially good for drying ether.
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byko3y
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Cheep synthetic zeolites (made from kaoline) might be used for drying different solvents, those are so dirt cheep (1$/lb) nobody actually bothers to
resell them. But getting the 3Å for ethanol and methanol drying is a real pain in the ass.
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alking
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I'll probably get a kilo or two of 3A and/or 4A, it'd be great to have plenty of extras on hand.
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RogueRose
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Found 13x sieves for GREAT price locally - but 1000lb min purchase.. :(
I've found a GREAT supplier of 13x sieves but the catch is I have to buy 1000lbs. yeah. I'm trying to find sellers of 3,4,5a sieves who might need
13x and make some kind of deal where I can either trade 13x for some of their 3,4,5a's, even if I have to give them much more 13x for the 3,4,5's.
I'm also trying to find a way to act as a shipper for 13x sieves for out of country sellers so they don't have to ship them here so it will save in
time and shipping expense and in exchange they can either ship me 3,4,5a sieves (if they carry them) or I can get a portion of the sale price. IDK
what the best method is to work this out but if something can be done to barter the 13x for others, it would allow me to provide sieves at a great
price and a wide range of them.
So, I'm asking members who might be interested in any of these sieves to give me ideas on how to leverage my large quantity of 13x sieves into getting
some of the other types.
For those that don't know about 13x, they are used in making pure O2, N2, CO2 and Argon. One system can isolate pure forms of all 4 of those gases
using only the 13x sieves.
I'm working on a very high flow O2 concentrator of about 50 liters per minute at a minimum of 90% purity using standard shop air compressors making
the system extremely inexpensive (a 50 LPM O2 concentrator would cost $20-50,000) where I could put one together for maybe $1000. I wouldn't trust it
for medical use but anything for shop use would be fine.
Any suggestions on how I might be able to leverage the 13x would be greatly appreciated and if anyone knows of good applications for O2, N2, CO2 and
argon, that would give me some good ideas on where I could maybe sell some of these to buy the 3,4,5's in bulk.
any suggestions are greatly appreciated!
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Melgar
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I'd get some 13X ones, since they seem to be what's used in pressure-swing adsorption O2 concentrators, and if I had one of those, a lot of things
would become a lot easier. I don't really have the money right now though.
Why does it seem like everyone here is always broke? Can't one of us whip up a batch of NZT-48 or something?
The first step in the process of learning something is admitting that you don't know it already.
I'm givin' the spam shields max power at full warp, but they just dinna have the power! We're gonna have to evacuate to new forum software!
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Bert
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Any information on calculating zeolite material weight and absorption chamber size requirements for 13X pellets Vs. litres/hour O2 @ some specified
pressure?
Basically, interested to find out how much 13X would be needed to continuously run a small oxygen & acetylene (or MAP gas) torch.
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RogueRose
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The qualities of each zeol;ite vary from brand to brand, and lot to lot so it's hard to estimate.
  
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XeonTheMGPony
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Think you got your wires crossed there rogue! As those pics are very very out of place for the thread!
FYI I'd still be interested in a pound of 3a and 4 sieves.
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Sulaiman
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| Quote: Originally posted by Bert | Any information on calculating zeolite material weight and absorption chamber size requirements for 13X pellets Vs. litres/hour O2 @ some specified
pressure?
Basically, interested to find out how much 13X would be needed to continuously run a small oxygen & acetylene (or MAP gas) torch.
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Nothing technical, but a domestic unit had two cylinders of c250 cc zeolite each,
for an output of, from memory, 1 litre/minute at 90% percent oxygen
Playing with the oxygen output of that machine and gas, only a small flame, maybe ok for a jewler ?
CAUTION : Hobby Chemist, not Professional or even Amateur
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