Proficiency testing (PT): Leaching test according to standard EN 12457-2

Distribution Schedule 2021

Round Registration
Final Report

March 2021 12/02/2021 01/03/2021 26/03/2021 12/04/2021

Final Reports in the Customer Area

October 2021 24/09/2021 11/10/2021 05/11/2021 22/11/2021
Registration deadline: 24/09/2021
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Interlaboratory proficiency testing organized in accordance with the standard ISO/IEC 17043:2010 - Conformity assessment — General requirements for proficiency testing.

Scope of the Interlaboratory Proficiency Testing

The scope of this proficiency testing is to assess the analytical performance of testing laboratories in the execution of the leaching test according to standard EN 12457-2 on sewage sludge, solid waste and similar matrices.


  • Antimony (Sb)
  • Arsenic (As)
  • Barium (Ba)
  • Cadmium (Cd)
  • Chromium total (Cr)
  • Copper (Cu)

  • Lead (Pb)
  • Mercury (Hg)
  • Molybdenum (Mo)
  • Nickel (Ni)
  • Selenium (Se)
  • Zinc (Zn)

  • Chemical Oxygen Demand (COD)
  • Chloride
  • Conductivity (20 oC)
  • Dissolved Organic Carbon (DOC)
  • Dry mass at 105 oC *

  • Nitrate
  • pH (25 oC)
  • Sulfate
  • Total Dissolved Solids (TDS)

*: Dry mass at 105 oC of the “as-received” test sample.

Proficiency test item

  • 1 x 150g of sewage sludge ready to use.

ADDITIONAL TEST SAMPLES: For costs and availability of additional test samples contact Qualitycheck (e-mail


The analysis must be performed following the analytical procedure prescribed by the standard EN 12457-2:2002 "Characterisation of waste - Leaching - Compliance test for leaching of granular waste materials and sludges - Part 2: One stage batch test at a liquid to solid ratio of 10 l/kg for materials with particle size below 4 mm (without or with size reduction)".

For each measurand, one measurement result shall be reported.

  • Request a quote

    Download and complete the Application Form, selecting for each matrix, the measurands and the period in which you want to participate. Send it by email ( or by FAX (0039 0656562874).


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