- (a) The complete chemical cartridge respirator will be fitted to the faces of persons having varying facial shapes and sizes.
- (b) Where the applicant specifies a facepiece size or sizes for the respirator together with the approximate measurement of faces they are designed to fit, the Institute will provide test subjects to suit such facial measurements.
- (c) Any chemical cartridge respirator part which must be removed to perform the facepiece or mouthpiece fit test shall be replaceable without special tools and without disturbing facepiece or mouthpiece fit.
- (d) The facepiece or mouthpiece fit test using the positive or negative pressure recommended by the applicant and described in his instructions will be used before each test.
(e)
- (1) Each wearer will enter a chamber containing 100 p.p.m. isoamyl acetate vapor for half-mask facepieces, and 1,000 p.p.m. for full facepieces, mouthpieces, hoods, and helmets.
- (2) The facepiece or mouthpiece may be adjusted, if necessary, in the test chamber before starting the test.
(3) Each wearer will remain in the chamber for 8 minutes while performing the following activities:
- (i) Two minutes, nodding and turning head;
- (ii) Two minutes, calisthenic arm movements;
- (iii) Two minutes, running in place; and
- (iv) Two minutes, pumping with a tire pump into a 28-liter (1 cubic-foot) container.
- (4) Each wearer shall not detect the odor of isoamyl-acetate vapor during the test.