| 21. | The APF for negative pressure half mask respirators are twofold.
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| 22. | The UL181 test requires a negative pressure of 200 Pa.
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| 23. | These units create no negative pressure in the room.
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| 24. | That's a negative pressure _ a horrible pressure ."
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| 25. | The child actor may experience unique and negative pressures when working under tight production schedules.
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| 26. | When breathing, downward motion of the thoracic diaphragm creates negative pressure in the thoracic cavity.
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| 27. | The difference of the APF for air purifying negative pressure full-facepiece masks are not large.
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| 28. | No longer is the Clinton administration striking a balance between positive inducements and negative pressures.
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| 29. | Hospitals do not have large numbers of negative pressure rooms, designed to contain infected air.
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| 30. | Without proof that sizable negative pressures exist in the xylem, the pull theory remains speculative.
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