ASTM D8629-26

1.1 This guide provides a uniform basis for identifying the key information and evaluations needed to determine compliance with manufacturers’ specified performance ranges and performance characteristics important for user selection.

1.2 This guide is intended to assist in determining the unit size of the desiccant as well as the desiccants’ ability to sorb moisture, the rate at which moisture is sorbed, and control humidity levels within the packaging without inducing corrosion through contact with packaging or product, or producing unacceptable levels of dust when agitated.

1.3 This guide covers testing for desiccants typically identified as adsorbent such as clay, silica gel, zeolite, and similar and does not cover absorbent or deliquescent desiccants.

1.4 This guide may not cover all criteria needed for every customer such as particle size, reactivation, and containment durability.

1.5 Units—The values stated in SI units are to be regarded as the standard. The values given in parentheses are mathematical conversions to inch-pound units that are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.