MIL-DTL-450D
4.4 Test methods.
4.4.1 Test conditions. Ensure the routine and referee testing conditions are in accordance
with section 9 of FED-STD-141, except as otherwise specified herein.
4.4.2 Total solids.
4.4.2.1 Method. Conduct test in accordance with ASTM D 2369 Method B using toluene as
the solvent.
4.4.3 Water.
4.4.3.1 Method. Conduct test in accordance with ASTM D 244, sections 4 through 10,
using toluene as the solvent with the exceptions noted herein. Mix the sample with 75 mL of
solvent. Make the connections between the flask, trap, and condenser by means of standard taper
joints according to Figure 1 of ASTM D 95. Regulate the heat applied so that condensate falls
from the end of the condenser at a rate of one to two drops per second.
4.4.4 Mineral matter.
4.4.4.1 Equipment.
a. Crucible
b. Hotplate
c. Hood
d. Muffle furnace
e. Desiccator
f. Scale
4.4.4.2 Method.
a. Transfer approximately 25 grams (g) of the compound to a tared crucible and weigh
accurately to 1 milligram (mg).
b. Evaporate the low boiling solvent on a hotplate and under a hood.
c. Transfer the crucible with the viscous solid to a muffle furnace and gradually ignite to a
dull, red heat in order to avoid spattering until the residue is free from carbon.
d. Cool in a desiccator and weigh.
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