RTC is A2LA accredited (certificate# 2122.01), producing accredited NELAC Proficiency Tests to the relevent sections of ISO 17025 and ISO Guide 43. RTC also has a registered ISO9001:2000 quality system.
We have been producing environmental LPTP for more than 20 years. We regularly send out more than 10,000 PT samples a year to over 500 subscribers, on four continents.
Proficiency Testing Subcategories: