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.

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MIL-PRF-14512L(EA)

4.3.3.1 For examination. Every item in the lot shall be inspected for critical characteristics. Sam-

ple filters shall be examined and tested in accordance with the classification of characteristics in

4.3.5. If a filter is found that does not conform to leakage or air flow resistance requirements, the

non�conforming filter shall be rejected and removed from the lot. For major characteristics other than

air flow resistance, failure of samples to conform to any characteristic based on sampling and accep-

tance criteria specified therein shall be cause for rejection of the lot. Failure of any sample filter to

conform to any minor characteristic based on the sampling and acceptance criteria specified therein

may be cause for rejection of the lot represented.

4.3.3.2 For test. A 100�gram sample of adsorbent shall be taken during the filling of the first and

last filter manufactured each day and placed in separate open containers. Those samples of adsorbent

shall be exposed to the same conditions of temperature and humidity as their associated filters. Each

filter shall be tested for airflow resistance (4.3.6.1) and leakage (4.3.6.2). Following leakage testing,

filters shall be packaged. Concurrent with or immediately following the packaging of the filters cor-

responding to each adsorbent sample, a 10�gram portion of each mixed adsorbent sample shall be

tested for moisture content in accordance with 4.3.6.3. Packaged sample filters shall then be for-

warded to the Government and half of them subjected to rough handling in accordance with 4.3.6.4.

Following rough handling, the Government shall conduct gas life tests on sample filters (see Table I)

in accordance with 4.3.6.5 and 4.3.6.6. Any filter failing leakage or air flow resistance requirements

shall be rejected and removed from the lot. If any sample filter from the lot fails to meet the other

requirements in section 3, the lot represented shall be rejected.

4.3.4 Inspection characteristics. Critical characteristics are characteristics whose nonconfor-

mance to specified requirements is likely to result in hazardous or unsafe conditions for individuals

who use or maintain the product. Characteristics whose nonconformance to specified requirements

is likely to prevent performance of the tactical function of a major end item are also critical character-

istics. Major characteristics are characteristics whose nonconformance to specified requirements is

likely to result in failure or to reduce materially the usability of the item for its intended purpose.

Minor characteristics are characteristics whose nonconformance to specified requirements is not like-

ly to reduce materially the operation or usability of the item for its intended purpose.

4.3.5 Classification of characteristics. Conformance examinations and tests shall be as speci-

fied in table III. When specified herein, accept on 0 and reject on 1 attributes sampling inspection

shall be performed on the designated characteristics using the stated levels in table II for selection of

sample sizes.