Institute for Interlaboratory Studies
Spijkenisse, The Netherlands
Many laboratory managers like to have some proof of their laboratory's
participation in our proficiency test scheme, preferably in the form of a
certificate that can be copied for auditors or clients. Our institute decided to
start offering such 'Certificates of Participation' (see downloadable example
certificate of participation). The certificates are available since October 1, 2004. Besides the participation in our program, the performance in a specific round can also be the subject of a certificate. Our institute decided to issue a
special 'Certificate of Excellence' (see downloadable example
excellence) for a laboratory with outstanding performance, this is when all
reported results of the respective laboratory are within the reproducibility
limits of the target methods selected.
This means that if only one laboratory result is outside the reproducibility
limits of the target method, only a 'Certificate of Participation' can be
The certificates are only prepared upon receipt of a written order from the
laboratory before the start of a proficiency test. A fee of 20 Euros per certificate will be charged for this service.