Depth filter sheets are used to remove particles from liquids. This means that liquids can be clear, fine or sterilization-filtered. For depth filtration filter media of a thickness of 2.5 to 4.5 mm are required. The particles are retained using two filtration principles: 1. surface filtration and 2. depth filtration. The liquid flows through a three-dimensional, asymmetrical fiber network in the depth filter. The solid components are retained using mechanical and electrokinetic effects. This significantly increases the absorption capacity. The purpose of a filtration process is to produce either a liquid (filtrate) or solids (retentate). Depth filtration focuses mainly on the production of liquid filtrate.
Formats are available from 6 cm round to 2.425 x 1.215 m square. Practically every format in between is possible, which means they can be installed in any commercially available sheet filter. Depth filter sheets have a particle absorption capacity of up to 4 kg/m2. Furthermore, any FILTROX filter sheet grade is available in lenticular module format.