Proficiency Testing

The Environmental PT studies are ACLASS (certificate# AP-1469) accredited, producing accredited NELAC Proficiency Tests to the relevant sections of ISO 17025 and ISO 17043. RTC also has a registered ISO9001:2008 quality system. RTC have been producing environmental LPTP for more than 20 years and regularly sends out more than 20,000 PT samples a year to over 2,500 participants throughout the world.


RTC Environmental PT Study Schedule
Quick Turn Studies
Request a Custom Quote
Sigma-Aldrich PT Web Reporting System for reporting and evaluating your results.
Training Videos for PT Reporting