A-A-54372A
The finished mask shall have the following minimum dimensions:
Horizontal (length) – 6-1/2 inches
Vertical (width) – 3-1/2 inches
(Measurement shall be taken when the mask is flat and pleats are fully folded).
The air exchange pressure, Delta P, of the mask material shall be no more than 3.0 mm of water pressure when tested in accordance with any commercially acceptable method.
The filtering efficiency of the mask shall not be less than 95 percent when tested by the method of Greene and Vesley (J. Bacteriol, Vol. 83. No. 3, p. 663, March 1982) or comparable method to permit free breathing and unrestrained communication.
The flammability requirements of the mask shall be in accordance with class 1 of Code of Federal Regulations (CFR) 1610 Part 16 and the time of the flame spread shall be 4 seconds or more.
The mask shall have no objectionable odor and shall not cause irritation to the skin or eyes when tested using human panel and rabbit subjects in compliance with Federal Regulation CFR 16 1500.41 AND 1500.42.
Workmanship. The masks shall be free from defects which detract from its appearance or impair its serviceability.
Unit. Package (PG). One package containing six containers of fifty masks, as specified, constitutes one unit. Each container shall permit one-at-a-time removal of each mask.
Quality Assurance Provisions.
Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contact or purchase order, the contractor may use his own or any facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.
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