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 fibers can become airborne creating significant environmental health problems. Proper sampling is key to determining airborne asbestos concentrations. Sampling methods are also available to determine asbestos concentrations in settled dust.

Count
Average background fiber count is less than 4 fibers per 100 fields.
Clearing
Filter material clears thoroughly to meet method specifications and is suitable for PCM 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 minimized error.
Construction
Certified leak-free, cassette parts are manufactured with close tolerances and vacuum and pressure tested for leakage.

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Specifications

Diameter (mm)	Filter and Cassette Specifications	Qty.	Cat. No.
25	MCE, 1.2-µm filter, preloaded in a 3-piece black conductive polypropylene (goblet style with extension cowl) cassette, banded with 2-inch spacer, with support pad	50	225-507
25	MCE, 1.2 µm, gridded filter, preloaded in a 3-piece black conductive polypropylene (goblet style with extension cowl) cassette, banded with 2-inch spacer, with support pad	50	225-1934
25	MCE, 0.8 µm, gridded filter, carbon-filled conductive polypropylene, black, assembled with cowl, banded, tapered-end style for PCM analysis BestChek Quality tested for low asbestos fiber background Certificate of analysis included	50	225-326 ^*
25	MCE, 0.8 µm, carbon-filled conductive polypropylene, black, assembled with cowl, banded, tapered-end style for PCM analysis BestChek Quality tested for low asbestos fiber background Certificate of analysis included	50	225-321 ^*
25	MCE, 0.8 µm, carbon-filled conductive polypropylene, black, assembled with cowl, banded, tapered-end style for PCM analysis BestChek Quality tested for low asbestos fiber background Non-certified	50	225-321X ^*
25	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 BestChek Quality tested for low asbestos fiber background Certificate of analysis included	50	225-321A ^*
25	MCE, 0.45 µm, filter with support and 5.0-µm diffuser pads, carbon-filled conductive polypropylene, black, assembled with cowl, banded, tapered-end style for TEM analysis BestChek Quality tested for low asbestos fiber background Certificate of analysis included	50	225-327 ^#
25	Microvacuum Cassette, MCE, 0.45 µm, carbon-filled conductive polypropylene, black, assembled with cowl and Tygon nozzle for TEM analysis BestChek Quality tested for low asbestos fiber background Certificate of analysis included	ea	225-322 ^**
37	MCE, 0.45 µm, styrene cassette (non-conductive) with microvacuum nozzle	ea	225-9543
37	Polycarbonate, 0.4 µm, styrene cassette (non-conductive) with microvacuum nozzle	ea	225-9542
Microvacuum Cassette Template Reusable plastic 10 x 10 cm for sampling asbestos		ea	225-2403 ^**
Microvacuum Cassette Template Disposable paper 10 x 10 cm for sampling asbestos		250	225-2415