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soxhlet friedrichs condenser question

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timeloop

timeloop

Rising Star
SWIM has apparently purchased a very nice soxhlet apparatus that should be arriving tomorrow. :d :d :d :d SWIM told me that he is very happy to finally have some decent glassware :d :d :d :d SWIM asked me to ask some of the alchemists on the nexus about a particular function of the condenser.

the condenser is a Pyrex Friedrichs condenser with angled side drip tube.

the question is exactly what is the angled side drip tube used for? SWIM has found that the condenser looks slightly different to all of the other friedrichs condensers he has seen.

here is an image:

3621476964_31548a0582_o.jpg


any help would be greatly appreciated
 
I don't like that tube. It looks so easy to break!!!

I've never seen a condenser like that before. The tube must be for collecting samples of the condensate. Why would you want that?
 
swim thinks it would be very easy to break as well... and can envision it happening quite quickly

SWIM has also never seen a condenser like that before... but was guessing that it perhaps could be used as a compact distilling apparatus of sorts...

why would swim want that? mostly to get the soxhlet and flasks and attachments... planning to try and experiment with essential oils and create some extracts of various native plants... but swim is not entirely sure what he would specifically be using the drip tube for apart from experimenting with distilling

it is difficult to see exactly how the condenser is constructed in the picture. Do you think it will function like a normal condenser at all? do you think it would be possible to use it to reflux the solvent? or should I be getting a normal condenser?
 
I'd venture to guess that it funnels the condensation off so that you can collect it instead of it dripping all over your apparatus/workstation. Very awkward, however.
 
Won’t work for soxhlet! I hope I wrong but this is used for solvent recovery - collecting of condensed sample without condensate being returned to flask for reboiling. Instead of letting your condensed droplets of solvent to continuously drip into the soxhlet apparatus trough condenser bottom joint and then being siphoned back to flask its going to send it right down that damn tube for collection “dripping” into separate collecting flask! Even if you find someone to properly seal that tube it probably still won’t work. The solvent vapor from flask will be entering central column then exiting holes at top of the column, condensate on spiral and drip down bottom where it will start to collect probably all the way up to level of the vapor entering holes. Twisted scenario for operation of soxhlet but I would try anyway:twisted: ! Or simply buy 4-6 bulb Allihn condenser. The soxhlet’s top joint in your picture seems to be of 45/50 size.
Although the Friedrich you got is very handy for instance when evaporating down, freeing your "sample" of the solvent. But if used for this purpose you might need to acquire more adapters (reducing adapter) or flask with different size neck. Usually this type of condensers for some mysterious to me reason made mostly with 34/45 bottom joint. The flasks in your picture look more like 24/40. Research before you buy something especially of ibay. Check “Aceglass”, “Chemglass” online catalogs and compare offered items with catalog pics and descriptions.
All the best comrade!
 
thanks for the msg clamshavefeelingstoo and door5. The glassware arrived today and it seems like you are right... there is no way for the condensate to drip back down into the soxhlet, only out of the drip tube... (SWIM really should have done proper research ;) ) however to be used as you say in freeing the sample and recycling solvent is very handy... ill check out aceglass and chemglass and get some reducing adapters if needed.

another couple of questions... would a 3 bulb allihn condenser do the trick? (swim has found a cheapish one) or should SWIM really get a larger 4-6 bulb one?

SWIM likes the look of the Friedrichs/Graham/Dimroth style spiral condensers, (he thinks it would probably add to the whole made scientist feel he has got going on in his workshop/lab)... however SWIM now realizes that picking glassware purely on aesthetic value is really not the best idea :) .... so what would be the most effective/efficient condenser to get for extraction purposes?
 
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