Patrick Selig, Senior Manager of Accreditation, Author at the ANSI Blog

Student analyzing laboratory sample to keep up with the changes to laboratory proficiency testing in ISO/IEC 17043:2023.

The 2023 Edition of ISO/IEC 17043: Main Changes and Expectations

May 12, 2023May 12, 2023Patrick Selig, Senior Manager of Accreditation

The 2023 edition of ISO/IEC 17043, Conformity Assessment – General Requirements For The Competence Of Proficiency Testing Providers, was published on May 8, 2023. The […]

Female scientist pouring chemical into beaker before preparing reference material and certified reference material.

Reference Material (RM) vs Certified Reference Material (CRM)

July 29, 2022January 10, 2023Patrick Selig, Senior Manager of Accreditation

ISO/IEC 17025 accredited laboratories use Reference Materials, or RMs, and Certified Reference Materials, or CRMs, in a variety of ways. RMs and CRMs can be […]

Sampling with pipettes and test tubes, something important in laboratory testing and accreditation.

The Importance of Sampling in Testing

October 15, 2020January 24, 2023Patrick Selig, Senior Manager of Accreditation

The importance of sampling in testing can’t be overstated. And environmental sampling leads the way with sample collection procedures at the forefront in the face […]