# Extractor Column

## Overview

The two column extractor is a type of eVOLVER experiment designed to continuously extract a molecule of interest exuded by a microbe. One set of vials are bioreactors where cells are continuously cultured. Those vials are each paired with an extractor vial, where microbes are continuous dropped through a solvent layer that extracts a biomolecule of interest. This solvent can be sampled to determine amount of biomolecule that is made.

<figure><img src="https://3394537773-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FYy5AdmKzUTn7D8n357Md%2Fuploads%2FqYaUblxEUnBvzcBLsQYm%2Fimage.png?alt=media&#x26;token=7e7fb610-0900-472e-b4cd-661663c72d1c" alt=""><figcaption><p>Diagram of extractor fluidics.</p></figcaption></figure>