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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, 0.8um MCE collection filter, and one cellulose support (OSHA ID 113 for sulfuric acid).
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