• Members of the previous forum can retrieve their temporary password here, (login and check your PM).

Sepertory funnel in STB !

Migrated topic.
mombreast

mombreast

Rising Star
I read in a thread that one advantage of AB is it allows
the extractor to use a seperatory funnel.
So in STB, a sep funnel can not be used ?
Of course if plant metarial is in the solution you can't pour it in a sep funnel,
but what if swim had removed the plant material ?

Or is it simply because dacanting and filtering of high pH solutions
is dangerous and not reccomended ?
 
You can use a sep funnel in a STB extraction...if you want to get every bit of non-polar solvent from your extraction jug, a sep funnel is the way. you will be separating polar water layer from plant material from non-polar solvent top layer. Pour the last bit of solvent from the extraction vessel into the sep funnel, some of the basified water with plant matter will be poured with the non-polar solvent. you wait until the mix separates into layers in the sep funnel, then you drain out the bottom basified water/plant matter out of the bottom of the sep funnel, leaving only non-polar solvent.
 
Thanks Indonesia...
I was confused because it was written as such by a respected member here at nexus...
 
benzyme said:
use a buchner funnel before transferring raw extract to a sep funnel 😉
Click to expand...

Thanks for the suggestion.
SWIM ordered a buchner funnel and aspirator, going to try them in the near future.

He recently did AB on MHRB.
He found that the acidic solution was full of plant particles,
so he waited 2 days but most of them didn't sink to the bottom.
So he tried gravity filter using a filter paper classified as "fast flow rate",
but it couldn't remove it at all.


His next plan is to use a cotton filter or buchner funnel with a slow flow rate filter paper.

Can a buchner funnel with a slow-flow-rate paper remove most of plant particles?
He is going to give this a try anyway, he doesn't want to wait a week for particles to sink.....
 
Back
Top Bottom