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Proficiency testing requirements

Proficiency Testing sample providers must comply with the most current proficiency standards to be recognized by our laboratory accreditation program. Six providers of Proficiency Testing (PT) samples meet the requirements of the Environmental Laboratory Accreditation Program in Washington.

Approved proficiency sample providers

These companies meet requirements to provide proficiency-testing samples for labs. Please contact the Lab Accreditation Unit to ask if we will accept PT sample results from providers not listed.

Absolute Standards, Inc.
800-368-1131
www.AbsoluteStandards.com

Advanced Analytical Solutions, LLC
304-485-6325
www.advancedqa.com

ERA
800-372-0122
www.eraqc.com

NSI Solutions, Inc.
800-234-7837
www.nsilabsolutions.com

Sigma-Aldrich RTC
800-576-5690
www.sigmaaldrich.com/analytical-chromatography/proficiency-testing.html

Phenova (formerly Wibby)
A Phenomenex Company

866-942-2978
www.phenova.com

Requirements for proficiency testing providers

We strive to make the lab-accreditation review process efficient, accurate, and timely. To do so, we require that proficiency testing providers send us the electronic data-deliverable files, as well as the PDF file for each proficiency testing study report.

In order to be recognized by the Lab Accreditation Unit, proficiency-testing providers must:

  • Comply with the most current TNI Proficiency Testing standard.
  • Assure electronic data deliverable (EDD) and PDF files are submitted electronically to us within one month after the close of a proficiency testing study.
  • Comply with Washington state's EDD formatting requirements based on the criteria and file structures commonly used for comma delimited text files:
    • data.txt
    • summary.txt
    • final.txt