24th Needle/Leaf Interlaboratory Comparison Test 2021/2022

Wien

2022

37 S. + Anhang

zahlr. Abb.

Monographie

978-3-903258-58-7

40003803

A high quality and comparable laboratory standard in all countries is indispensable for a European‐wide survey of the state of forests. Small changes in nature should be detected in a reliable way and not the changes in laboratory quality. Important issues on this way are method harmonisations, QA/QC in the laboratory daily routines and an implementation of a regularly performed Interlaboratory Comparison Tests programme. This Needle/Leaf Interlaboratory Comparison Test programme started with the first European Foliar‐Interlaboratory Comparison Test on two certified standards (BCR 100‐beech leaves and BCR 101 ‐ spruce needles) in 1993. The data were submitted by post or fax and had to be rechecked from the laboratories. All the data collection and evaluation had to be done manually. The final report was available after some months. The Interlaboratory Comparison Tests were performed biannually till 2002. Beginning with 2003/2004 (6th Interlaboratory Comparison Test) an annual test program wasset up and the tests were performed from the Forest Foliar Co‐ ordinating Centre/Austria (FFCC). The data collection was done via internet. The Needle/Leaf Interlaboratory Comparison Test program was opened for every interested laboratory.