• Pleated bag pre-filter
• Extends the life of the main filters by capturing larger particles
• Provides additional particle-capturing capacity
• Ideal for processes where large amounts of particles are produced
• Contains the particles inside for clean and simple disposal
• Standard captures particles to 5 microns at 40 - 60%
• Composite captures particles to 1 micron at 95% efficiency

Pre-filters are designed to capture larger particles before they can enter the main HEPA filter. Without pre-filters, the life of the main filter would be much shorter. A variety of media and designs are available to allow Purex extractors to be used in a wide range of processes.