Filter papers / air control
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Air control cassettes
• 37mm air control cassettes, single use transparent plastic filter holders
• Pre-assembly with MF (cellulose ester) type membranes of 0.45µm and 0.8µm
• Two filters matched in weight to ± 0.1mg, eliminating the need for pre-weighing in a gravimetric analysis
• Three-section design to hold filter in place when cassette is opened for free air sampling