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FED-STD-791 Lubricants, Liquid Fuels, And Related Products, Testing Method OfThis test method standard is composed of standard test methods for sampling, inspecting and testing lubricants, liquid fuels and related products. It is issued pursuant to the Federal Property and Administration Services Act of 1949, as amended and its application to the purchase of commodities referred to herein is mandatory on all Federal agencies.

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'NOTE:This draft dated 15 April 2006' by DasH - Page 241 of 460
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FED-STD-791D
TABLE 2. Unknown acid mixture
Chromatographic Identification and mole percent determination
Identified
Retention
Peak
Normalized Correction
A
Mole
acid
time ,mm
height
peak height  factor (see  corrected
percent
Mm
Table 1)
height
(rounded)
(measured)
See 6.3.1
1
2
3
1.14
1.4
1.2=1
C4
71
5
1.2
0
0
0=0
iso C5
0
0
0
1.00
40.0
34.4=34
C5
84
165
40.0
1.05
21.4
18.4=18
C6
98
84
20.4
1.23
26.0
22.4=22
C7
115
87
21.1
5.1
1.36
36.9
5.9=6
C8
136
21
12.1
1.69
20.4
17.6=18
C9
162
50
Peak height of one component
1.
sum of peak heights of all components
100 times " corrected" height of component
3.
sum of all " corrected" heights
2.
Peak height times correction factor
7. CALCULATIONS
7.1 This section is not applicable to the test procedure
8. REPORTING
8.1 Report each component to the nearest integral value
9. PRECISION
9.1 Repeatability- Replicate determinations shall not differ from one another by
more than mole-percent.
9.2 Reproducibility has not been established
Method prepared by:
Navy- NAPC-1986
240



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