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| MIL-S-1419D (PA)
vessel containing approximately 100 ml. of methanol which has
just been titrated to the prelimimary end point as described In
MIL-STD-1234, Method 101.2 paragraph 5.1. The final end point
shall be reached in 3.5 minutes In the manner described in MIL-
STD-1234, Method 101.2, paragraph 5.4. A 50 ml. aliquot of the
blank shall be titrated in the same manner. The water content
shall be calculated as follows:
Percent water = (VR-S) (V'R-S'). Multiply the result
by 100F and divide by W.
where:
F = gins. of water per ml. of standard
water in methanol
solution.
V = ml. of Karl Fischer reagent added
to the sample
V'= ml. of Karl Fischer reagent added
to the blank
R = ml. of standard water In methanol
solution per ml.
of Karl Fischer reagent.
S = ml. of standard water in methanol
solutlon for
titration of sample.
S'= ml. of standard water in methanol
solution for
back titration of blank.
W = weight of sample In gins.
4.4.1.1.2 Alternate method. - The moisture content shall be
determined In accordance with Method T101.4 of MIL-STD-286.
4.4.1.2 Black powder. - The method of determining the per-
centage of moisture in black powder shall be in accordance with
MIL-P-223.
4.4.1.3 Polypropylene felt, paper, and chipboard. - Ten grams
of each material shall be accurately weighed and placed in a tared
weighing dish. The dish and contents shall be weighed and placed
in an oven and dried at 100 plus or minus 2 degrees Centigrade for
2 hours. The dish shall be cooled in a desiccator and weighed.
The loss in weight shall be calculated as percent moisture in the
sample.
4.4.2 Transportation vibration. - The signal assemblies
selected as specified in 4.3.3.2.1 or 4.3:3.2.2 shall be pack-
aged and packed in accordance with dwgs. 8836949 and 8836950.
Each packed box shall be subjected to the transportation-vibra-
tion test as specified in MIL-STD-331, except that each box shall
be vibrated at the specified amplitudes for four (4) hours in
each of three different positions (i.e., box positioned so that
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