MIL-PRF-22750G
a. Qualification inspection (see 4.2).
b. Conformance inspection (see 4.3).
4.2 Qualification inspection. Qualification shall be conducted by the qualifying activity (see 6.4).
The qualification test sample shall consist of five (5) quart kits of each material. The samples shall
be legibly identified (see 6.4.4). Qualification inspection shall consist of tests for all requirements
specified in section 3 and table II. Qualification inspection shall examine for user instruction
markings (see 3.6). The results of each test shall be compared with the applicable requirements in
section 3. Failure to conform to any requirement shall be counted as a defect and paint represented
by the sample test shall not be approved for inclusion in the QPD under this specification.
4.3 Conformance inspection. The manufacturer shall forward from each production lot (see 4.3.1)
a batch validation letter detailing the batch number, manufacturer's code, specification and type
number, QPL number and batch volume to U.S. Army Research Laboratory (ARL),
ATTN: RDRL-WMM-C, Organic Coatings Team, Building 4600, Deer Creek Loop, Aberdeen
Proving Ground (APG), MD 21005-5066. The manufacturer shall perform conformance inspection
testing on each production lot and have these test results on file when requested by the contracting
officer. Conformance inspection for individual lots shall test for VOC, condition in container, total
solids, fineness of grind, mixing properties, spraying properties, drying time, and 60 degree
specular gloss. There shall be no failures (see 6.6).
4.3.1 Lot and batch formation. Unless otherwise specified in the contract or purchase description
(see 6.2), a lot shall consist of all coatings of the same type, composition and color, from a single
uniform batch, produced and offered for delivery at one time (see 6.4.2). Unless otherwise
specified in the contract or purchase description (see 6.2), a batch shall consist of all coating
material (in U.S. gallons) manufactured during one continuous operation and forming part of one
contract or order for delivery (see 6.4.2). The addition of any substance to a batch shall constitute a
new lot.
4.4 Inspection conditions. Unless otherwise specified, all inspections shall be performed in
accordance with ASTM D3924. Also, unless otherwise stated in the test method or paragraph,
room temperature shall be 73 ± 4 °F (23 ± 2 °C) and a 40 - 70 percent relative humidity.
4.5 MSDS. The MSDS shall address components A and B and be in compliance with
FED-STD-313 (see 3.7). Noncompliance shall be cause for rejection.
4.6 Test methods.
4.6.1 Test conditions. Except as otherwise specified herein, the routine testing and referee testing
shall be conducted in accordance with ASTM D3924. A dry film thickness of 2.0 ± 0.2 mils (50 ±
5.0 microns) shall be used whenever film thickness is requested in any test, unless otherwise
required by the test. Failure of any test result to fall within the specified ranges in section 3 shall
constitute failure of the applicable test. For all tests requiring the use of the mixed coating,
components A and B shall be mixed in the proportions as specified by the manufacturer.
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