【国外标准】 Standard Practice for Cleaning and Certification of Specially Prepared Canisters

5.1 Whole-air sampling vessels are cited and utilized throughout a variety of internationally, nationally, and regionally applied documents and test methods, yet the methods generally fail to uniformly specify criteria used to qualify the use and re-use of sample containers. This practice describes a set of best practices for reusable containers and canister media cleaning, quality control (QC) objectives, and corrective actions necessary to ensure equipment that meets cleanliness needs of their intended use.1.1 This practice describes procedures to clean and verify the cleanliness of reusable sample containers used in air sampling and analysis applications, which includes but is not limited to passivated stainless steel canisters and rigid containers of other material specifically designed for whole-air sampling. This practice describes the steps used to clean volatile substance from canister interiors and document cleanliness prior to re-use.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.3 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.1.4 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.