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 221 of 460

FED-STD-791D

Method 3463.2

September 30, 1986

STABILITY OF GREASE IN HOT WATER (WATER IMMERSION)

1. SCOPE

1.1 This method is used for determining the stability of grease in the presence of

hot water.

2. SUMMARY

2.1 The method consists of immersing the sample in boiling water for 10 min, and

checking the water for cloudiness or other evidence of emulsification of the sample.

3. SAMPLE SIZE

3.1 Approximately 5 g of grease to be tested.

4. REFERENCES, STANDARDS, AND APPARATUS

4.1 Beaker, 600 mL.

4.2 Stirring rod, glass.

5. MATERIAL

5.1 CAUTION - SOME MATERIALS ARE TOXIC AND HAZARDOUS. The

chemical materials listed in this section must be handled carefully. Federal Test Method

10000, Material Handling Safety Precautions, is a reference which lists all toxic and

hazardous materials cited in FTMS 791. The synonyms, life hazard, flammability,

handling and storage precautions, emergency treatment and measures, and spill practices

of each chemical are explained.

5.2 Distilled water.

6. PROCEDURE

6.1 Place approximately 500 mL of distilled water in the beaker, and heat it to

gentle but active boiling.

6.2 Apply a single lump or globule of the sample to one end of the stirring rod.

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