1.1 This guideline describes the essential features of quality assurance under the following headings: Validity of Analytical Procedures, Calibration and Standardization, Sample Identification and Storage, Reports of Results, Records Retention, and Internal Audit.

1.2 This standard may involve hazarous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.