News
IAS Announces Transition from ANSI/NCSL Z540-1-1994 TO ANSI/NCSL Z540.3-2006
IAS is pleased to announce transition from ANSI/NCSL Z540-1-1994 TO ANSI/NCSL Z540.3-2006. Beginning in January 2008, IAS accreditation certificates issued to its accredited calibration laboratories will reference the updated version of the standard.
The predominant American National Standard for calibration laboratories, Z540-1 was retired in the summer of 2007, in favor of Z540.3. Many of the requirements from Z540-1 remain in Z540.3, and the new Standard is aligned much closer to ANS/ISO/IEC 17025:2005. The provision for allowing the 4:1 Test Uncertainty Ratio (TUR) also remains and is contained in Clause 5.3 of the Standard.
Assessment of calibration laboratories by IAS includes all requirements of ANS/ISO/IEC 17025:2005; and under Z540.3 Clause 5.3, IAS will ensure that the laboratory meets the requirements of that clause. Specific assessment and documentation of the 4:1 TUR will be included as applicable. Assessment to all the requirements of Z540.3 may not be needed for most calibration laboratories; however for those laboratories needing to demonstrate compliance, an assessment to all requirements of Z540.3 will be provided upon specific written request. For more information, please contact Hershal Brewer at (562) 699-0541, extension 3309.