Respirator preformance rating table for mask design

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      <subfield code="a">The performance rating table (PTR) is a beginning step to formulating physiological knowledge in a way that can be useful for design. The PTR organizes physiological knowledge to assign performance data to various mask and level of work causes. Best estimates of tabled values were obtained from the literature. The PTR identifies components that should become part of the eventual model, gives magnitude estimates for specific sets of conditions, and gives a basis for further work in mask design</subfield>
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      <subfield code="a">American Industrial Hygiene Association journal</subfield>
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      <subfield code="t">American Industrial Hygiene Association journal</subfield>
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      <subfield code="g">Vol. 53, nº 3, March 1992 ; p. 193-202</subfield>
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