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is a separatory funnel essential? (poll)

Migrated topic.
shago said:
It's not necesary but it will make your life lot easier.

A continuous liquid liquid extractor is MUCH EASIER to use making one obsolete. Unlike a separatory funnel, it works better, it's automatic and never causes emulsions.
 
Here's a picture of a heavier than water CLLE (continuous liquid liquid extractor) setup with a boiling flask on the side, and a condenser at the top. Note that this kind is NOT good. You should get the kind with the shutoff valve on the return arm.
 

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