Author: Eugenia O'Kelly; Sophia Pirog; James Ward; P John Clarkson
Title: Informing Homemade Emergency Facemask Design: The Ability of Common Fabrics to Filter Ultrafine Particles Document date: 2020_4_17
ID: 51thatw6_14
Snippet: Tests were conducted as described by Hutten [6] . An airtight apparatus allowed simultaneous testing of unfiltered and filtered air. A 1" diameter tube provided access to two ultrafine particle counters (P-Trak model 8525) which measured concentrations of particles 0.1 μm and smaller. The tube held a 1" diameter sample of the filter material. Readings were taken 1.5" in front of and behind the filter medium. Airflow was controlled through suctio.....
Document: Tests were conducted as described by Hutten [6] . An airtight apparatus allowed simultaneous testing of unfiltered and filtered air. A 1" diameter tube provided access to two ultrafine particle counters (P-Trak model 8525) which measured concentrations of particles 0.1 μm and smaller. The tube held a 1" diameter sample of the filter material. Readings were taken 1.5" in front of and behind the filter medium. Airflow was controlled through suction, which pulled air through the filter medium at a rate of about 16.5 m/s.
Search related documents:
Co phrase search for related documents- filter material and particle counter: 1, 2
- particle counter and ultrafine particle counter: 1
Co phrase search for related documents, hyperlinks ordered by date