m\) gas filter which filters out airborne toxic chemical agents as part of a Nuclear, Biological and Chemical \(NBC\) filtration system in the armored weapons systems.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16

MIL-PRF-14512L(EA)

be 3 hours. If the moisture content of the adsorbent exceeds the requirement, the filters represented

by the samples shall be considered unacceptable.

4.3.6.4 Structural integrity. Each sample filter shall be positioned with the inlet and outlet faces

in a vertical position and clamped on a steel movable plate. The plate shall measure 76.2 centimeters

by 76.2 centimeters and have a total weight of 109�9 kilograms including the holding clamps. When

the filter is securely clamped in place, there shall be no distortion of the frame or body of the filter.

The steel movable plate and filter shall be raised and let fall (free) 19�3 mm onto a steel plate at the

rate of 200 drops per minute for 15�0.1 minutes. The steel base plate shall be part of the apparatus

and shall be firmly anchored to a concrete floor capable of absorbing the impact of the vertical vibra-

tions. The test shall be performed at a room temperature of 21�11�C. Throughout the test the filter

shall remain in a firm position. Filters may be padded or blocked where clamps press against the side

or top of the frame, but not the bottom, to prevent distortion of the filter. The movable steel plate must

be parallel to the base plate at all times to eliminate any horizontal movement and/or force. The filter

shall meet the requirements of 3.5.4 after rough handling.

4.3.6.5 DMMP gas life (destructive). DMMP life shall be determined by the Government

laboratory in accordance with 3.5.5 using the Q223 tester (Drawing 136-41-1755) or an equiv

alent tester.

4.3.6.6 CK gas life (destructive). The CK life shall be determined by the Government labo

ratory in accordance with 3.5.6 using the Q223 tester or an equivalent tester.

4.3.6.7 Adsorbent media. For adsorbent other than ASZM�TEDA adsorbent, all supporting test

data shall be based on test paragraphs, conditions and methods described in EA�DTL�1704. Sup-

porting test data will also be needed for any required test falling outside the scope of EA�DTL�1704

(see 6.5).

4.3.6.8 Fines retention test. The filter shall be rigidly mounted with the top face in the verti

cal position and subjected to the test of MIL-STD-810, Method 516.4, Procedure I. A total of

three half sine wave shock pulses shall be applied in both directions along each of three mutual

ly perpendicular axes. Peak amplitude shall be 40�4 g, 11�0.2 milliseconds (ms). At the con

clusion of the test, examine the filter for adsorbent fines emission and record the total amount

of emission through the fines filters. The filter shall meet the adsorbent emission limits of 3.5.8.

4.3.6.9 Dampness and mildew resistance tests. The dampness resistance test shall be in ac

cordance with 5526 of FED-STD-191 and the mildew resistance test shall be in accordance

with 5750 of FED�STD�191. A minimum of two samples of fines media from filters shall be sub-

jected to each test.

5. PACKAGING

5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified

in the contract or order (see 6.2). When actual packaging of materiel is to be performed by DoD