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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 253 of 460
FED-STD-791D
c
* 100
Percent total insoluble matter =
w
where:
c = weight of residue in crucible
w = weight of moisture- and oil-free sample
7.2 The percent MoS2 is calculated using the following equation:
c
* 435.9
Percent MoS  2 =
w
where:
c = increase in weight of crucible
w = weight of moisture- and oil-free sample
8. REPORTING
8.1 Report the percent total insoluble matter and percent MoS2.
9. PRECISION
9.1 Precision data have not been developed for this method
Method Prepared by:
Navy - NADC - 1986
252



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