MIL-PRF-3122J
TABLE I. Chemical requirements
CHARACTERISTICS
MINIMUM
MAXIMUM
Hexane Soluble material, percent 1/
4.0
16.0
Chromic oxide (1/) shall be calculated on a
4.0
7.5
hide substance basis (1/), percent
Non-determined material, percent (Type I)1/
-
20.0
pH value
3.0
4.0
Total ash, percent (Type I) 1/
-
10.0
1/ Calculated on a moisture-free basis.
4. VERIFICATION
4.1 Classification of inspection. The inspection requirements specified herein are classified as
follows:
Quality conformance inspection (see paragraph 4.2)
4.2 Quality conformance inspection. Unless otherwise specified, sampling for inspection shall
be performed in accordance with the referenced documents.
4.2.1 Component and material inspection. The above, components and materials shall be
tested in accordance with all the requirements of referenced specifications, drawings, and
standards unless otherwise excluded, amended, modified, or qualified in this specification or
applicable procurement documents.
4.3 End item testing. The methods of testing specified in ASTM, and as listed in Table II, shall
be followed. All test reports shall contain the individual values utilized in expressing the final
result. The lot shall be rejected if any one of the following conditions exists:
More than three specimens fail requirements for water penetration or slit or stitch tearing
strength.
Any specimen fails requirements for water absorption, or staining.
Any composite test result fails to meet the specified requirements.
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