This call concerns 25 European Standards for which the performance characteristics of the methods need to be determined by means of interlaboratory studies for PFC 3 (soil improvers) and PFC 4 (growing media), which fall under the responsibility of CEN/TC 223 ‘Soil improvers and growing media’.
During the interlaboratory studies, the draft protocols are validated for their use with different soil improvers and growing media. The draft protocols are enclosed in the ZIP-file for information.
DEADLINE: 2022-06-29
