Liquid Extraction - Vertical Mixer Settler

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Dear Eng-Tipers:

I am searching (I already googled..) for vertical mixer-settlers for a small pilot operation. They look like graduated cylinders. Though, they have connections for tubing for adding and withdrawing fluid phases. I have seen pictures of them in old magazines, however, those suppliers seem to have vanished.

Does anyone have information or idea of where to purchase such equipment?

Thanks in advance.