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 115 of 460

FED-STD-791D

Method 3205.3

September 30,1986

EMULSION (SOLUBLE CUTTING OILS)

1. SCOPE

1.1 This method is used for determining the emulsifying tendency of soluble cutting oils.

2. SUMMARY

2.1 The test consists of shaking a mixture of sample oil and water, allowing the mixture

to stand, and examining for evidence of separation and for air bubbles.

3. SAMPLE SIZE

3.1 Approximately 5 mL of oil to be tested.

4. REFERENCES, STANDARDS, AND APPARATUS

4.1 Sample bottle, 120 mL (4 oz), with stopper.

5. MATERIALS

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 Pour 95 mL of distilled water into sample bottle and add 5 mL of test oil. Shake

vigorously for 1 min.

6.2 Let bottle stand for 1 h at 21� to 32�C (70� to 90�F). At end of this period, examine

for evidence of separation.

7. CALCULATIONS

7.1 This section is not applicable to the test procedure.

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