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 234 of 460

FED-STD-791D

6.4 At the end of 24 h, remove dish, and allow sample to cool to room

temperature.

6.5 Determine the evaporation loss of sample within 0.2 mg (see 7.1).

7. CALCULATIONS

7.1 Calculate the evaporation loss of the sample as follows:

S -W

* 100

Evaporation loss, percent by weight =

where:

S = initial weight of sample, in g.

W = weight of sample, in g after the test.

8. REPORTING

8.1 Report the evaporation loss to the nearest 0.2 mg.

9. PRECISION

9.1 Precision data have not been developed for this method.

Method Prepared By:

Air Force - AFWAL/POSL - 1986

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