It’s time for the interlaboratory proficiency test (PT) 2023. The test material will be shipped on the 3rd October 2023. NRL's can follow the transport through the link send directly to them by e-mail.
Deadline for submitting results is the 15th December 2023.
Documents for carrying out the tests
Below, you'll find the letters containing information for PT 1 and PT 2 (also present in each parcel) as well as the spreadsheet for the results including instructions on how to fill it in.