Filter Media & Purification
Adsorbents, bleaching clays and filtration: what each removes and how to use it.
Filter Media & Purification Bleaching Clay, Activated Carbon or Magnesium Silicate for Oils?
October 22, 2026
7 min read
Dark colour, haze and off-odours are some of the most common complaints we hear about food oils, essential oils and flavour extracts. The usual fix is an adsorbent: a fine, porous solid that you mix into the oil (or pack into a column), let it grab the unwanted compounds, then filter it back out. The choice is not one-size-fits-all. Bleaching clay, activated carbon, magnesium silicate and alumina each attract different kinds of molecules. Picking the wrong one can leave the colour behind or strip out the ar [...]
Read the guide ›
Filter Media & Purification Choosing Adsorbent Filter Media: Carbon, Clays, Silica, Alumina and DE Compared
October 22, 2026
5 min read
Passing an extract through a bed of adsorbent media is one of the simplest ways to improve its colour, clarity, smell and stability. The edible oil industry has done it for decades: almost every bottle of vegetable oil on a grocery shelf has been "bleached" through an activated clay. The same tools work for essential oils, flavour extracts and other botanical oils.
The hard part is choosing the media. Each type removes different things, flows differently, and has its own handling needs. This guide compares [...]
Read the guide ›