25mm Air Sampling Cassettes


Zefon 25mm Styrene Air Sampling Cassettes w/ MCE or PVC Filters are designed to meet all applicable NIOSH, OSHA and EPA air sampling standards.

All Zefon 25mm cassette housings are preloaded under stringent quality assurance standards with only the finest quality membrane and support pads.


  • Polystyrene Housing, 2 or 3 piece
  • Preloaded, Ready to Use
  • Leak Free Design

Zefon 25mm Styrene Cassettes are available in the following configurations:

Filter Type Pore Size Housing Style SKU
Mixed Cellulose Ester MCE 0.8µm 2-Piece 528MCE
Mixed Cellulose Ester MCE 0.8µm 3-Piece 538MCE



Mixed Cellulose Ester Filters can be used for the following applications


Lead and Metal