Purex 202274 - Pre-Filter, Labyrinth F8/F9, Alpha (2 Pack)

These Purex Pre-filters are designed to capture larger particles before they can enter the main HEPA filter.

The main filter life would be much shorter without pre-filters, therefore these would be an asset to anyone using these units.

Suitable for:

• Purex Analogue Alpha Fume Extraction

Key Features:

• Patented Labyrinth pre-filters
• Extends the life of the main filter by capturing larger particles before they reach the HEPA filter
• Fits neatly under the main filter in integral extractors
• Graduated fiber matrix delivers excellent particle capture - up to 20 times more than a standard filter
• Ideal for medium-high volume applications 
• Contains the particles inside for clean and simple disposal
• Composite material available for extra filter life and filteration down to 0.5 micron
• Standard captures particles to 3 micron at efficiency of 60% to 80%
• Composite captures particles to 1 micron at efficiency of 80 - 95%