EPSE passes the interlaboratory Proficiency Test (04/2020) carried out by Proftest SYKE in cooperation with KVVY Tutkimus Oy for the laboratories conducting leaching tests for solid waste material in May-June 2020. The results of the two stage batch leaching test (EN 12457-3) for samples of treated slag from waste combustion were compared and evaluated. The tested measurands were metals (As, Ba, Cd, Cr, Cu, Hg, Mo, Ni, Pb, Sb, Se, V, Zn), Cl-, F-, SO42-, DOC, pH, conductivity, and TDS. In total, 13 participants joined in the proficiency test and 10 of them were from Finland.
In this proficiency test either the robust mean or the median of the results reported by the participants was used as the assigned value. The results were evaluated both with z and En scores. When deviation of 10–35 % or 0.3-0.4 pH units was accepted from the assigned value, 85 % of the results evaluated with z scores were satisfactory. Of the results evaluated with En scores, 80 % were satisfactory. EPSE passed the proficiency test, proving the strong expertise of EPSE’s laboratory technicians in the field of laboratory analysis.
The Proficiency test report is electronically available here:
www.syke.fi/proftest > Raportoidut pätevyyskokeet > Interlaboratory Proficiency Test 04/2020 (SYKEre 40/2020) Leaching behavior test for waste material: Two stage batch leaching test. The official publication format is only electronic.
Link to the report: http://hdl.handle.net/10138/319540 (in English)
This article is written by Anni Honkonen.