![3894709e-1842-4772-b33a-7c580b54c8db.jpeg](https://steemitimages.com/640x0/http://steepshot.org/api/v1/image/3894709e-1842-4772-b33a-7c580b54c8db.jpeg)
In the photo are laboratory prepared packed columns that is composed of activated carbon and terra cotta clay with a 60 mesh size. The water that is used to saturate the columns is distilled water to lessen the chances of organic matter in the column.