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Plastic, single-use disposable, four stages, for thoracic sampling at 2L/min. The PPI provides the closest match to the entire ISO 7708/CEN respirable curve compared to any other sampler available. Preloaded with four porous plastic disc impaction substrates, one 37mm Quartz collection filter, and one cellulose support (NIOSH 7908 for Sulfuric Acid).
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