ASTM D3934 – Standard Test Method for Flash/No Flash Test—Equilibrium Method by a Closed-Cup Apparatus
Description:
Significance and Use
5.1 This test method ensures that before the flash test is run the air/vapor space above the specimen has attained a saturation concentration of vapor by using standard closed cups under equilibrium conditions. The saturation concentration of the vapors will be attained at some temperature between that of the liquid and the cooler apparatus lid. However, this temperature will be close to the temperature of the specimen after it has been maintained at the specified temperature for at least a 10-min period. This test method does not provide for the determination of the actual flash point but only whether a specimen does or does not flash at a specified temperature.
Scope
1.1 This test method covers the determination of whether a liquid complies with the closed-cup flash point requirements in government regulations, or in specifications, or as agreed between the purchaser and the seller.
1.2 This test method is limited to a temperature range between 0 and 110°C (32 and 230°F).
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
ASTM D3930