Product Description
Zefon 25mm air sampling cassettes are engineered for regulated asbestos fiber monitoring using phase contrast microscopy (PCM) and transmission electron microscopy (TEM) methods. Manufactured in-house under strict quality controls, every cassette is individually assembled, serialized, and tested to support defensible laboratory results in environmental and industrial hygiene investigations.
This configuration features a 1.2µm mixed cellulose ester (MCE) filter with grid, a white identification band, and a three-piece conductive housing, packaged 50 cassettes per box and delivered preloaded and field-ready.
Cassette & Filter Specifications
• 25mm three-piece cassette
• 1.2µm MCE filter with grid (PCM)
• White band identification ring
• 2" static-conductive extension cowl
• Serialized for traceability
• Preloaded for immediate sampling
• Pack quantity: 50 per box
Regulatory Compliance
• Meets NIOSH 7400 & 7402
• Meets OSHA ID-160
• Meets AHERA requirements (TEM Model Z045BA)
• Designed for asbestos fiber PCM & TEM analysis
Independent Quality Verification
Every Zefon cassette undergoes 100% inspection to confirm the correct filter and pad configuration and to verify that no parchment paper remains inside the unit.
Each production lot is further evaluated through independent laboratory blank testing to confirm acceptable background fiber counts per NIOSH requirements.
Daily random-lot audits provide additional assurance for consultants, laboratories, and abatement professionals. Test documentation is available upon request.
Why This Grid Cassette Matters in the Field
• Improves fiber counting consistency during PCM analysis
• Minimizes resampling from contaminated blanks
• Supports regulatory-defensible reports
• Trusted by environmental labs and remediation contractors
• Ideal for clearance testing, exposure monitoring, and abatement projects
Need a Non-Grid or Different Micron Option?
Alternate filter pore sizes and TEM-specific configurations are available.
Contact our technical team for compatibility and lead-time guidance.
