The Interpretation you are attempting to access, "Appendix A requirements and techniques for fit testing respirators.", is reserved for subscribers.

Excerpt from "Appendix A requirements and techniques for fit testing respirators."
Is the use of a device that allows the quick determination of the correct size respirator precluded by the mandates of Appendix A? You add that other sizes and makes are available if the first, as determined by the device, is uncomfortable to the wearer.

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Internal Reference: Catcode=A221 Funcode=SZ47