Talk:Separatory funnel

This article should probably be renamed "separatory funnel." I have never seen this piece of glassware referred to as a separating funnel. Look through any Aldrich, Fisher, or Berge catalog, and you will find only "separatory funnels" for sale. Mihovil 02:16, 22 August 2006 (UTC)

Sigma-Aldrich has both, "separatory funnels" and "separatory funnels", in their online catalog. Google gives three times more hits for "separatory funnel". I'd say they are synonyms and the "separatory" one is a bit more common. If you feel the need to change the title - the "move" button is there for a reason... Cacycle 02:32, 22 August 2006 (UTC)

Picture
Nice picture, but perhaps it could be relabeled. I think "oil" and "water" is a bit limiting? As a suggestion what about "upper phase" and "lower phase"? —Preceding unsigned comment added by Quantockgoblin (talk • contribs) 21:36 (+8 GMT), 13 October 2006

A generic upper/lower term is useful especially since the organic or aqueous phase depends on the densities of the solvents and the solubilities of the compounds to be separated. --Rifleman 82 13:44, 13 October 2006 (UTC)


 * I've redone the picture in SVG format so you can easily use Inkscape to change the text to something different. -- Borb 22:38, 13 October 2006 (UTC)

Pressure-equalizing separatory funnel
I'm not really sure that a Pressure-equalizing separatory funnel is a ' Pressure-equalizing separatory funnel ', but rather a dropping funnel.

A dropping funnel is used to add liquids to reactions (as described in the text), rather than used to separate them! Whilst the two pieces of apparatus look quite similar, if you were to shake a pressure-equalizing dropping funnel (to mix phase prior to separation) the liquid would run out the side arm - which could be quite dangerous

Quantockgoblin 12:01, 19 October 2006 (UTC)

I have seen dropping funnels with a stopcock at the top of the pressure equalizing side-arm, one could use this as a pressure-equalizing separatory funnel, although I have never seen it used as such.Petermlambert (talk) 14:48, 8 September 2014 (UTC)

I would say the dropping funnel is more of a feature of the steam and connection at the bottom. Dropping funnels do have narrower stem, and often are ended with a tube that is sharp with the bevelled end, so it drops better. Even if there is an additional connecting cone to connect it to other glassware. Many people and manufacturers will call funnels dropping funnels, even without pressure-equalizing tube. The ones with, will be called 'pressure equalizing funnel'. Both separator funnels and dropping funnels can have pressure equalizing tubes, or none. 2A02:168:2000:5B:BFF5:CA65:7F9E:4032 (talk) 17:26, 11 August 2020 (UTC)

Trivia
Would it be possible for informtion on how a separatory funnel works to be put on the page? —Preceding unsigned comment added by 89.242.98.57 (talk) 16:41, 1 June 2010 (UTC)

Gilson style
Might be worth mentioning Gilson style funnels, which do have longer narrow stem between main chamber (be it spherical, pear shaped, or cylindrical) and the stock cock. This allows more precise control of liquid flow and helps with separation and visualising the liquids. 2A02:168:2000:5B:BFF5:CA65:7F9E:4032 (talk) 17:27, 11 August 2020 (UTC)