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 224 of 460

FED-STD-791D

6. PROCEDURE

6.1 Clean the jar and cap by scrubbing with scouring powder and rinsing with tap

water. Complete the rinsing with distilled water, and air dry the jar and cap (using an

oven at 104�C if desired).

6.2 Line the cap with aluminum foil.

6.3 Pour approximately 3.8 L of the sample into the jar, and replace and tighten

the cap.

6.4 Wrap aluminum foil around the jar to exclude all light from the sample.

6.5 Identify the contents of the glass jar (including type of sample, date stored,

and any other useful information).

6.6 Store the sample for one year in the storage chamber 24� " 3�C (75� " 5�F).

6.7 At the end of the 12-month period, remove the jar from the chamber and take

off the aluminum wrapper, being careful not to shake or agitate the contents.

6.8 Visually examine the sample, and note the presence of cloudiness, sediment,

suspended matter, discoloration, or other changes in homogeneity.

7. CALCULATIONS

7.1 This section is not applicable to the test procedure.

8. REPORTING

8.1 Report the presence of cloudiness, sediment, suspended matter, discoloration,

or other changes in homogeneity.

9. PRECISION

9.1 Precision data have not been developed for this method.

Method Prepared by:

Air Force - SFTL - 1986

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