MIL-PRF-25604F
APPENDIX A
A.2.1.2 Quality control. The following performance criteria must be met for fuel purity analysis,
RSD ≤ 10 %
a
GC replicate analyses (3 consecutive)
a. RSD = Standard Deviation * 100% / Mean
A.2.1.3 Calculations. Calculate the percent by weight of the component detected in the sample
��
as follows:
%� =
∑ ��
× 100
where,
The measured area of the DMA/MA peak multiplied by its signal attenuation factor.
AC
=
∑ Ai
The sum of all the measured peak areas multiplied by their respective signal
=
attenuation factors
The weight percent of the component corresponding to AC.
%C
=
��% ������ = ��% ���/��
Report amines in weight percent as,
Assumption: The thermal conductivities of all the components in the sample are equal.
A.2.1.4 Equipment.
a. Gas chromatograph equipped with a thermal conductivity detector (TCD) and a split injector.
b. Agilent ChemStation or equivalent.
c. A 60 m x 0.53 mm ID and 1 µm film thickness DB-wax capillary column (Agilent
P/N 125-7062 or equivalent).
d. Glass wool packed split liner (Restek P/N 23309 or equivalent).
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