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 335 of 460

FED-STD-791D

6. PROCEDURE

6.1 Clean the outside surface of the tube of the test setup (Figure 1), using steel

wool.

6.2 Mount the heating element centrally in the tube, and adjust the voltage so that

the temperature of the tube is maintained at 704�C (1300�F).

6.3 When the tube has reached the correct temperature, drop 10 mL portions of

the test liquid at a rate of 10 mL in 40 to 60 s from various heights onto various points on

the tube, and observe the ignition characteristics of the liquid. (Clean the tube with steel

wool before each 10 mL application of the liquid.)

7. CALCULATIONS

7.1 This section is not applicable to the test procedure.

8. REPORTING

8.1 Report results as follows:

a. Flashes or burns on the tube, but does not after dripping from the tube.

b. Does not flash or burn on tube, but does after dripping from the tube.

c. Does not flash or burn on the tube or after dripping from the tube.

9. PRECISION

9.1 Precision data have not been developed for this method.

Method prepared by:

Army - ME - 1986

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