It cost only 50 quid and UK suppliers have it . Cheers for usefull info mate

I have the heavier than water model. The valve seems like a great idea and I wish I'd known about it before.

Tell me about it!

I wish SWIM had known he could use a liquid liquid extractor with a shutoff valve as a still before he bought his whole distillation setup! Instead of all that expensive distillation apparatus he bought, he could have bought 1 liquid liquid extractor with a shutoff valve, the condenser for it, and a boiling flask, and he’d have a system with many possibilities at a fraction of the cost of all the lab glass he now owns.

Did you know you can also use a heaver than water liquid liquid extractor as a type of Soxhlet! Damn! Another peace of lab glass SWIM has that he could have saved money on by just buying a liquid liquid extractor setup!

To use it as a Soxhlet type system, all you do is put the herbs in a sock or similar long cloth bag, put it in the liquid liquid extractor body, and run the system with a single solvent! It works JUST AS GOOD AS A SOXHLET, and if you have the liquid liquid extractor with the shutoff valve you can also concentrate your extraction all in one system!

Man! I wish I’d know that sooner. SWIM now owns 3 condensers, 1 for his original distillation setup, 1 for his Soxhlet, and one for his liquid liquid extractor! Of course they are all different sizes and incompatible with each other! SWIM could have just got the liquid liquid extractor setup with a condenser and boiling flask and saved hundreds of dollars on the rest of the lab glass he bought for his Soxhlet and still! Not to mention all the space he’d have saved in his lab too!

Before anyone goes out and buys a distillation setup or a Soxhlet, I advise looking at a heaver than water liquid liquid extractor with a shutoff valve. It functions like a Soxhlet, like a still, and a liquid liquid extractor, all in one piece of equipment!

roto vap is key

Yeah, I'm in the same boat. I've got two Alihns that are not interchangable with my liquid/liquid and Soxhlet. Do you know of anywhere you can just buy the sidearm w/shut off valve? I believe that is the term for that piece of the appartaus. I am not stoked about buying a distillation setup and would rather stay away from having expensive and breakable glassware.

vacuum dessicator.
great for protecting products from oxidation/carbonation/hydration from air

SWIM is currently setting up a more lab like spice factory. SWIM likes the all-in-once device idea, however the extractors that can be used as a soxhlet seem to be hard to find. SWIM only found the one below and it's actually more expensive than a separate soxhlet + extractor.



EXTRACTION APPARATUS 500 ML, LIQUID-LI./ST-COMP. ST.-COCK, EXTRACTOR SOC. ST 45/40, INSET CONE ST 45/40, SOCKET ST 29/32, COND. 2XST 29/32, JAC.L. 250 MM, FLASK RD.BOT. 1000 ML, ST 29/32

Any help would be very much appreciated!

Found one on ebay today, the photo's are a bit blurry but I think it's the Pyrex 3922 extractor, capacity is 1000 ml. It doesn't come with a shut-off valve but it's modular so that can be fixed in the future. The seller has another one available, see here

I'd be worried about it leaking. I don't trust that kind. I prefer it all one leak proof piece.

That's the kind I have. It's pretty simple to keep from leaking, the parts fit together nice, its emptying the entire setup at the end that can be difficult, because you have to have the side-arm on just right or else it /will/ leak when you are pouring things out.

Would anyone happen to know about how much shredded mhrb would fit into a 1000ml soxhlet?

SWWIM was thinking about purchasing one of these: http://www.ecrater.com/product.php?pid=2629909
Swim likes to run at least 300-450g at a time. It would be great if these could hold that much.

Nice to know there probably won't by any leaking problems. Did you ever consider to buy the optional sidearm with the shut-off valve?



This is what SWIM found in another topic

Great thread guys!!

Does anybody know of/use anything good (that can be bought cheaply from shops) to syphon/extract the top layer of naptha from a STB.
I know most techniques say a turkey baster, but SWIM read that they aint the best, so he thought he be clever and buy some syringes. Thesse work kinda good until the naptha fucks the rubber seal which seems to make drawing anything up very difficult.
So i just wondered if any of you guys use anything cheap simple and effective?

yes, SWIM's technique has helped him a lot

his container where the mimosa water+solvent are in, has the opening large enough to fit SWIM's hand.. So SWIM basically submerges an empty drinking glass.. Basically, as soon as the top of the glass goes under the liquid, the liquid starts going into it.. Since the naphtha layer is on top, it is the first thing to go into the glass.. Then once the glass is near full, he pulls it out and passes some water on the side of the glass which will be all dirty from going in the mimosa mix. So now there is a glass full of naphtha and maybe some of the dark basidified layer on the bottom.. Since the glass is much thinner than the original container, the layer of naphtha is much thicker in the glass, so its much easier to pipette it out (SWIM uses a glass pipette) .

another thing one might do is like people do to take gasoline out of a car to give gasoline to another car that needs some.. Basically using a tube that stays inside the naphtha layer (nearly but not touching the bottom layer with mimosa). Then this tube would have to go out and the other end would have to be on a lower level (with another container under). So basically start sucking up (dont use mouth, you dont want to accidentally swallow this stuff. maybe a quick use of vacuum cleaner or something), so due to gravity it will all get pulled and fall..

SWIM never done this second one, just thought it could work, specially for people making big extractions with loads of solvent and so on..

As an alternative you could use a Separatory Funnel, you can buy them on ebay for a couple of $$$

[quote=endlessness

yes, SWIM's technique has helped him a lot

his container where the mimosa water+solvent are in, has the opening large enough to fit SWIM's hand.. So SWIM basically submerges an empty drinking glass.. Basically, as soon as the top of the glass goes under the liquid, the liquid starts going into it.. Since the naphtha layer is on top, it is the first thing to go into the glass.. Then once the glass is near full, he pulls it out and passes some water on the side of the glass which will be all dirty from going in the mimosa mix. So now there is a glass full of naphtha and maybe some of the dark basidified layer on the bottom.. Since the glass is much thinner than the original container, the layer of naphtha is much thicker in the glass, so its much easier to pipette it out (SWIM uses a glass pipette) .

quote]

Jeez what the hell is he usin as a container?
See, SWIMs situatiuon aint the best for mass extraction. He shares a house with 5 others, so has got to keep his shit a little discreet. His container is an empty bratwurst jar, which kinda dooes the job, but it certainly aint big enough to be putting glasses in or what not.
He was hoping for somethin more "household". The amount of paraphinelia he has had to buy for this is ridiculous.
I cant imagine hel be able to get a seperation funnel in his town either. Might have to be a internet job right?

SWIM uses this. A very good solution for your syringe problem



This way, the naphtha never touches the rubber.

sweet...

swim just got this
for $149.. about $100-200 less than what they normally sell for (used).
these pumps are standard lab pumps, serious workhorses; designed to run continuously, and should last at least a decade before needing a rebuild (which is easy and relatively cheap).

Does it do both pressure and vacuum?

How much vacuum?

yes.

you can vary it between 25.5"(Hg)vacuum/60psi pressure (continuously). vacuum port is on the (your) right.
here's an ad for it at the Cole-Parmer site (P704 and P104 are basically the same model, both Gast). They're also sometimes listed under other trade names, like Millipore XX5500000

I know, it's not exactly deep vacuum, but it is controllable: those knobs behind the gauges let you regulate between vac and pressure.
this pump is ideal for filtration (an application which swim has used a number of times during his two semesters of polymer research), chromatography, desiccation (chambers and ovens), protein seps, distillation (including rotavaps), sublimation... the list goes on and on..

rotary vane pumps often pull 29.8+", but that's mainly used for heavy duty applications; can't really use it for filtration, some manufacturers (i.e. Fisher Scientific) even mention this.
swim had considered getting a rotary vane pump, but it requires extra accessories, namely gauges and reg valves, adding to the already relatively high cost of the pump.
valves and gauges come standard on the DOA-P104 AA, which is what that is in the pic. this model is cited several times in protein sep research papers.

the other thing swim is enthused about is the ease of repair; there are so many of these pumps out there, thus there are plenty of parts available for it. attached is the repair manual and spec sheet.
this thing is like a good solid piece of furniture...once you have one, you're set; won't need another for a long time.