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|  MIL-P-46067B(MR)
4.2.2.1.3 Inspection levels and acceptable quality levels (AQLs) for
examinations. The inspection levels for determining the sample size and the
acceptable quality level (AQL) expressed as defects per 100 units shall be
as follows:
Examination paragraph
Inspection level
AQL
4.4.2.1.1
II
2.5
4.4.2.1.2
S-2
2.5
4.2.3 Classification of tests . All tests under this specification shall
be classified as lot acceptance tests. They shall be made on each lot of
material offered against this specification and, in conjunction with the
above examination, shall be the basis of acceptance or rejection of the lot.
4.2.4 Testing. The material shall be tested for the applicable
characteristics listed in table I in accordance with the test methods
specified herein. The lot size, for the purpose of determining the sample
size for testing (see MIL-STD-105) shall be expressed in units of 22.6 kg (50
pounds). The sample unit shall consist of sufficient material to prepare all
required specimens. The inspection level shall be S-1, with an acceptance
number of 0. The results for each test shall be averaged results of the
specimens, except where only one determination is required.
4.3
Test methods.
4.3.1 Viscosity of liquid resin . The viscosity of the liquid resin without
hardener shall be determined in accordance with ASTM 2393 at a temperature of
25 0.5 (77 0.9 ). Conditioning shall be at 25 0.5 (77 0.9 )
C
F
C
F
for a minimum of 16 hours prior to testing. The Brookfield RVF viscometer
shall employ spindle #1 at 10 revolutions per minute for composition 1, and
spindle #4 at 4 revolutions per minute or spindle #5 at 10 revolutions per
minute for compositions 2 and 3. One determination shall be made.
4.3.2 Weight per epoxy equivalent . The weight per epoxy equivalent shall
be determined in accordance with ASTM D 1652. Two determinations shall be
made.
4.3.3 Specimen curing, conditioning, and testing . Specimens of epoxy
embedding compound shall be cured at 25 5 (77 9 ) for a minimum of 7
C
F
days, and conditioned in accordance with procedure A of ASTM D 618. Testing
of specimens shall be at 23 2 (73.4 3.6 ) and 50 5 percent relative
C
F
humidity, except for ash content determination (see 4.5.6).
9
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