Water filter cartridge AstroPore

foodstuffbeveragefor micro-filtration

Overview
Pleated filter cartridges using FUJIFILM's AstroPore membrane technology. Cartridge type designed for a wide variety of industries including food & beverage and electronics. AstroPore membranes were developed from photographic-film technology and have been improved since initial launch in 1969.

What is a micro filter?
Microfiltration uses membrane filters with pore sizes ranging approximately from 0.1 μm to 10 μm to trap fine particles and microorganisms. FUJIFILM's AstroPore is a micro filter with numerous microscopic pores manufactured with an asymmetric membrane structure that optimizes filtration performance.

Filter types

• Nominal (filtration) type: fiber-based structure with randomly tangled fibers.
• Absolute (filtration) type: synthetic resin film or membrane with defined micro-sized pores that trap particles larger than a specified size.

Typical applications

• Removing yeast and bacteria in brewery processes (beer, wine, Japanese sake)
• Removing harmful organisms from bottled water
• Removing contaminants from cleaning liquids used in washing processes for liquid crystal panels and semiconductors

Downloads (brochure contents summary)
Comprehensive brochure includes:

• Characteristics of FUJIFILM membrane filter
• Lineup of FUJIFILM cartridge series
• Suitable applications for each series

Key features

• Original asymmetric structure: pore diameter is larger on the inlet side and gradually becomes smaller toward the outlet side so coarse particles are trapped near the inlet and finer particles deeper in the membrane.
• Extended service life: asymmetric pore distribution enables use of the entire membrane thickness for particle trapping, reducing surface blockage and extending service life.
• Low initial pressure loss with high flow rate: larger inlet-side pores and a relatively thin dense layer reduce initial pressure loss while maintaining high flow.
• Reliable trapping performance: pore diameter can be as small as 0.03 μm (depending on product grade); sharp pore size distribution ensures reliable removal of fine particles and microorganisms.

Caractéristiques / spécifications techniques

• Membrane type: AstroPore asymmetric membrane (PES-based membrane structure described)
• Pore size range: approx. 0.03 μm (smallest grade) up to several micrometers depending on grade
• Filtration mechanisms: nominal and absolute types available
• Typical industries: food & beverage, precision machinery, electronics, semiconductor manufacturing, bottled water treatment
• Key benefits: extended service life, low initial pressure loss, high flow rate, sharp pore size distribution for reliable particle/microorganism removal