Proficiency testing (PT): Metals in wastewater


Distribution Schedule 2024



Round Registration
deadline
Despatch
samples
Reporting
deadline
Final Report

Round March 2024 09/02/2024 26/02/2024 22/03/2024 09/04/2024
Final Reports in the Customer Area

Round October 2024 27/09/2024 14/10/2024 08/11/2024 25/11/2024
Registration Deadline: 27/09/2024
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Scope of the Interlaboratory Proficiency Testing

The scope of this proficiency testing is the evaluation of the performance of laboratories for the determination of the metals in wastewater.

Interlaboratory proficiency testing organized in accordance with the standard ISO/IEC 17043:2010 - Conformity assessment — General requirements for proficiency testing.

Parameters

  • Aluminum (Al)
    (200 - 4000 microg/L)
  • Antimony (Sb)
    (50 - 1000 microg/L)
  • Arsenic (As)
    (50 - 1000 microg/L)
  • Barium (Ba)
    (200 - 2000 microg/L)
  • Beryllium (Be)
    (50 - 500 microg/L)
  • Boron (B)
    (800 - 2000 microg/L)
  • Cadmium (Cd)
    (10 - 200 microg/L)
  • Chromium (Cr)
    (100 - 1000 microg/L)
  • Chromium VI (Cr VI)
    (90 - 500 microg/L)
  • Cobalt (Co)
    (100 - 1000 microg/L)
  • Copper (Cu)
    (100 - 1000 microg/L)
  • Iron (Fe)
    (200 - 4000 microg/L)
  • Lead (Pb)
    (100 - 1000 microg/L)
  • Manganese (Mn)
    (200 - 4000 microg/L)
  • Mercury (Hg)
    (1 - 30 microg/L)
  • Molybdenum (Mo)
    (50 - 500 microg/L)
  • Nickel (Ni)
    (200 - 4000 microg/L)
  • Selenium (Se)
    (10 - 1000 microg/L)
  • Silver (Ag)
    (100 - 1000 microg/L)
  • Tin (Sn)
    (200 - 2000 microg/L)
  • Vanadium (V)
    (200 - 2000 microg/L)
  • Zinc (Zn)
    (100 - 2000 microg/L)

Proficiency test item:

  • 1 x 450 mL of the test sample of wastewater stabilized (filtration through 0,45 μm filters; addition of nitric acid up to pH<2 U) ready to use for the determination of all metals except Cr VI and Mercury (Hg).
  • 1 x 1000 mL of the test material to be prepared from a matrix and a vial of the spiking solution for the determination of Cr VI.
  • 1 x 1000 mL of the test material to be prepared from a matrix and a vial of the spiking solution for the determination of Mercury (Hg).
  • NOTE: All the details for the preparation of the final test sample are included in the Guide Lines of the interlaboratory proficiency testing provided with the test samples.

ADDITIONAL TEST SAMPLES: For costs and availability of additional test samples contact Qualitycheck (e-mail sales@qualitychecksrl.com)


ANALYSIS

The test sample should be analysed under the same conditions and with the same procedures used for the routine samples in the laboratory including the quality control procedures.

For each measurand shall be reported one result.

ADDITIONAL RESULTS: Each participant can submit up to 5 results* for the same analyte, thus obtaining an evaluation of laboratory performance for different operators, instruments and/or test methods (e.g. operator 1/operator 2, instrument A/instrument B, etc..).

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    *: Only one result submitted by the laboratory will be included in the statistical treatment of data for the calculation of the Assigned Value and statistics of data of the analyte, to avoid that a single laboratory has a different statistical weight, depending on the number of its submitted results. The additional results are evaluated by assigning z-score values, using the Assigned Value and the Standard Deviation for Proficiency Assessment obtained from statistical treatment.

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