 |
|||
|
|
|||
| ||||||||||
|
|  MIL-T-50009A
108
Bags, wooden or metal containers
in the solvent to such a depth that the tops
closure incorrect.
of the vanes are 3 centimeters (cm) below
Strapping of wooden containers loose
109
the surface. Start the stirrer, adj ust the tem-
or missing.
perature to 77 2F., and maintain the
Mixing instruction incorrectly pack-
110
temperature throughout the test. Add 8.0
aged, missing, or improperly locat-
ed in or on container.
0.1 g of the specimen, Record the time of ad-
111
Marking incorrect, missing, or il-
dition of the sample and the time at which
legible.
the gel covers a mark on the stirrer shaft
Minor.
AQL 4.0 percent defective,
201
1 cm below the initial liquid level. Record
Packing arrangement in wooden con-
tainers incorrect.
the time elapsed as vortex time.
4.5 Tests. Distilled water and analytical
4.5.2 Gel consistency.
grade chemicals shall be used throughout the
tests. Where applicable blank determinations
4.5.2.1 Procedure. All gels shall be pre-
shall be run and corrections applied where
pared in duplicate for each specimen, using
significant.
the equipment specified in 4.5.1.1, and test
solvent conforming to MS602. The solution
4.5.1 Gel formation.
temperature during stirring shall be main-
tained at 77 2F. The amounts of speci-
4.5.1.1 Equipment. The equipment re-
men and test solvent shall conform to table
quired for preparing gels for test purposes
II.
shall consist essentially of the following:
TABLE II. Gel formu lae for consistency test
(a) A mechanical stirrer rotating at a
speed of 300 10 revolutions per
minute (rpm). The stirrer shall
be fabricated of a glass or corro-
sion-resistant metal rod, 3/8 inch
in diameter, with four vanes of
The gels shall be stored in glass jars or in
the same material as the rod, 7/8
s t o r a g e tubes manufactured from steel,
by 7/8 by 1/8 inch, set at right
stainless steel, or anodized aluminum, for a
angles and with the faces parallel
period of 24 4 hours at the applicable
to the axis of the rod.
temperature specified in 3.3. At the end of
(b) A square, pint-size, mason-type jar
the storage period each gel shall be tested
approximately 3 by 3 by 5 inches.
for consistency in accordance with method
100 of Specification JAN-I-711, except that
(c) Storage containers of the type de-
in testing the 2 percent gel and 4 percent gel
scribed in method 100 of Specifi-
the load shall be reduced by 25 g instead of
cation JAN-I-711.
50 g and one conditioning stroke shall be
( d ) Constant temperature baths (air
used instead of the five called for in method
or liquid) capable of maintaining
100.
the specified test temperatures.
( e ) A weighing room maintained at
77 2F. and a maximum rela-
4.5.2.2.1 Two percent gels. Results of con-
tive humidity of 50 percent.
sistency tests on 2 percent gels within each
4.5.1.2 Procedure. Place 192.0 0.2 g of
set of duplicates shall agree within 25 g.
test solvent conforming to Standard MS602
Tests shall be repeated until this condition is
met, using fresh gel preparations.
into the glass jar and immerse the stirrer
4
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals