Test details
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Interlaboratory comparison B2B 12/2025 - Analyses of biowaste compost quality parameters
Finnish Food Authority, in collaboration with Proftest Syke's proficiency testing services, is organizing an
interlaboratory comparison (ILC) for laboratories that perform soil improver/compost quality parameter
analyses. The following measurands will be tested from two biowaste compost samples: pH, dry matter
(DM), bulk density, electrical conductivity, impurities (IMP), total nitrogen (Ntot), organic matter, total
organic carbon (TOC), and stability (oxygen uptake rate, OUR). About 14 laboratories are expected to
participate in this interlaboratory comparison. This ILC is part of EU co-funded Bin2Bean project
(bin2bean.eu). This interlaboratory comparison is not included in the Proftest Syke accreditation scope
(PT01, finas.fi/sites/en), however, its organization follows the principles of accredited operations.
Registration deadline is on 23 September 2025.
Sample dispatch date is 27 October 2025.
The final report for the proficiency test will be published in February 2026.