As the name suggests, the main filter medium is sand.

One form of diatomaceous earth is used as a filter medium, especially for swimming pools.

A bed of filter medium upon which a layer of microbial slime is promoted and developed.

An enclosure or a container which houses the bed of filter medium.

A system for distributing the flow of wastewater over the filter medium.

It is too early to make a firm judgement, but have you investigated Siporax as a filter medium?

If very small amounts of solution are involved, most of the solution may be soaked up by the filter medium.

The traditional process for wort separation is lautering, in which the grain bed itself serves as the filter medium.

In the former, the filter medium does not move while the airborne material is collected.

This is because there is no significant loss of radioactivity from the filter medium.