BestChek Asbestos Cassettes

Asbestos has so many attractive properties and has often been used in a variety of forms for construction. If building materials are not properly maintained, asbestos fibres can become airborne creating significant environmental health problems. Proper sampling is key to asbestos measurement and determining airborne asbestos concentrations. Sampling methods are also available to determine asbestos concentrations in settled dust.

The BestChek cassettes meet or exceed NIOSH, OSHA and ASTM standards in count, clearing, conductivity, collection area and construction:

• Count – Average background fibre count is <4 fibres per 100 fields
• Clearing – Filter material clears thoroughly to meet method specifications and is suitable for PCM (Phase Contrast Microscopy) analysis
• Conductivity – Cassette plastic contains over 18% carbon black for proper conductivity as tested using ASTM methods
• Collection area – Inside diameter varies by only ±5 mm² for consistent collection area and minimised error
• Construction – Certified leak-free, cassette parts are manufactured with close tolerances and vacuum and pressure tested for leakage

All preloaded asbestos filters include cellulose supports. The cassettes are quality tested for low asbestos fibre background and supplied with a Certificate of Analysis.

Diameter (mm)	Filter and Cassette Specifications	Pack Size	Part Number
25	Mixed Cellulose Ester (MCE), 0.8 µm, carbon-filled conductive polypropylene, black, assembled with cowl, banded, tapered-end style, for PCM analysis	50	225-321
25	Mixed Cellulose Ester (MCE), 0.8 µm, carbon-filled conductive polypropylene, black, assembled with cowl, banded, tapered-end style with stand-up plug in outlet end, for PCM analysis	50	225-321A
25	Mixed Cellulose Ester (MCE), 0.8 µm black grid, carbon-filled conductive polypropylene, black, assembled with cowl, banded, tapered-end style, for PCM analysis	50	225-326
25	Mixed Cellulose Ester (MCE), 1.2 µm, black grid, preloaded in a 3-piece black conductive polypropylene (goblet style with extension cowl) cassette, banded with 5 cm spacer, with support pad, for PCM analysis	50	225-1934
25	Mixed Cellulose Ester (MCE), 0.45 µm, filter with support, carbon-filled polypropylene, black, assembled with cowl and Tygon nozzle, banded, goblet style, for TEM analysis	Each	225-322
25	Mixed Cellulose Ester (MCE), 0.45 µm, filter with support,conductive polypropylene, black, assembled with cowl, banded, goblet style	50	225-507
25	Mixed Cellulose Ester (MCE), 0.45 µm, filter with support and 5.0µm diffuser pads, carbon-filled conductive polypropylene, black, assembled with cowl, banded, tapered-end style, for TEM (Transmission Electron Microscopy) analysis	50	225-327
37	Mixed Cellulose Ester (MCE), 0.45 µm, filter with support pad, 4-piece clear styrene cassette, banded	50	225-1925

BestChek Asbestos Cassettes

Microvacuum Cassettes for Asbestos

• Nozzle for easy sampling of settled dust on surfaces
• Meets specification of ASTM Methods D5755 and D5756
• Use with personal sample pumps at 2L/min
• Also available as a Sampling Kit

Diameter (mm)	Filter and Cassette Specifications	Pack Size	Part Number
25	Microvacuum Cassette, MCE, 0.45 µm, carbon-filled conductive polypropylene, black, assembled with cowl and Tygon nozzle for TEM analysis	Each	225-322
37	MCE, 0.45 µm, styrene cassette (non-conductive) with microvacuum nozzle	Each	225-9543