A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the U. Department of Defense. The overall mass loss can be classifiedinto noncondensables and condensables.
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Ask Document Center Inc. Scope 1. The overall mass loss can be classified into noncondensables and condensables. These include polymer potting compounds, foams, elastomers, films, tapes, insulations, shrink tubings, adhesives, coatings, fabrics, tie cords, and lubricants. Historically, TML of 1. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use 5. Samples tested at other temperatures may be compared only with other materials which were tested at that same temperature. It is sufficient that the pressure be low enough that the mean free path of gas molecules be long in comparison to chamber dimensions.
The user may designate additional tests to qualify materials for a specific application. The vials must be capped before removal from the conditioning chamber. Each specimen must be weighed within 2 min after opening the vial to minimize the loss or absorption of water vapor while exposed to an uncontrolled humidity environment.
This test is performed using a high vacuum test rig. The purpose of the test is to determine the amount of volatile content in a material when exposed to heat and vacuum in a closed system. After this conditioning, the samples are re-weighed and put into one of the testing cells. The typical test can run up to two different materials at a time. After all the samples are weighed and loaded into the chamber, it is then evacuated to a vacuum level of at least 7 x Pascals or 5 x torr. Each sample compartment has a corresponding collector chamber that is isolated from the others to prevent cross contamination.
Outgassing Testing: Measuring Outgassing in Vacuum Environments by ASTM E595
A number in parentheses indicates the year of last reapproval. A superscript epsilon f indicates an editorial change since the last revision or reapproval. This test method has been approved for use by agencies of the Department of Defense. Scope 1.