Proficiency testing (PT): Microbiological parameters in drinking water

Proficiency testing (PT): Microbiological parameters in drinking water

Distribution Schedule 2020



Round Registration
deadline		 Despatch
samples		 Reporting
deadline		 Final Report
February 2020 24/01/2020 10/02/2020 06/03/2020 23/03/2020
Deadline reporting results: 06/03/2020
May 2020 08/05/2020 18/05/2020 12/06/2020 30/06/2020
Registration deadline: 08/05/2020
September 2020 11/09/2020 28/09/2020 23/10/2020 09/11/2020
Registration deadline: 11/09/2020

Distribution Schedule 2019



Round Registration
deadline		 Despatch
samples		 Reporting
deadline		 Final Report
February 2019 18/01/2019 04/02/2019 01/03/2019 18/03/2019
Final Reports in the Customer Area
May 2019 03/05/2019 20/05/2019 14/06/2019 01/07/2019
Final Reports in the Customer Area
September 2019 06/09/2019 23/09/2019 18/10/2019 04/11/2019
Final Reports in the Customer Area

Scope of the Interlaboratory Proficiency Testing

The scope of this interlaboratory proficiency testing is the evaluation of the performance of laboratories for the quantitative determination of microbiological parameters in drinking water or similar matrixes (ex. mineral water, groundwater, etc.) according to standard requested.

PARAMETERS

  • Total aerobic count at 22 oC (1 - 1000 UFC/mL)
  • Total aerobic count at 37 oC (1 - 1000 UFC/mL)

    • Reference method: ISO 6222 or equivalent methods. New 2020!


  • Enumeration of Coliform bacteria (1 - 1000 UFC/100mL)
  • Enumeration of Escherichia coli (1 - 1000 UFC/100mL)

    • Reference method: ISO 9308-1 or equivalent methods. New 2020!


  • Enumeration of Coliform bacteria (1 - 1000 MPN/100mL) New 2020!
  • Enumeration of Escherichia coli (1 - 1000 MPN/100mL) New 2020!

    • Reference method: ISO 9308-2 or equivalent methods.


  • Enumeration of Enterococci (1 - 1000 UFC/100mL)

    • Reference method: ISO 7899-2 or equivalent methods. New 2020!


  • Enumeration of Clostridium perfringens (including spores) (1 - 1000 UFC/100mL)

    • Reference method: ISO 14189 or equivalent methods. New 2020!


  • Enumeration of Coagulase Positive Staphylococci (1 - 1000 UFC/250mL) New 2020!

  • Enumeration of Pseudomonas Aeruginosa (1 - 1000 UFC/250mL)

    • Reference method: ISO 16266 or equivalent methods. New 2020!


  • Enumeration of Legionella pneumophila (10 - 10.000 UFC/L)
  • Enumeration of Legionella spp (10 - 10.000 UFC/L)

    • Reference method: ISO 11731 or equivalent methods. New 2020!



Proficiency test item:

Test sample to be prepared from the vials containing the microorganisms according to instructions reported in the Guide Line of the proficiency testing.

  • 1 x 10L of the test material for the determination of all parameters except Legionella pneumophila, Legionella spp, Clostridium perfringens, Staphylococcus aureus and Pseudomonas Aeruginosa.


  • 1 x 1L of the test material for the enumeration of Clostridium perfringens.
  • 1 x 1L of the test material for the enumeration of Staphylococcus aureus.
  • 1 x 1L of the test material for the enumeration of Pseudomonas Aeruginosa.


  • 10 x 10L of the test material for the enumeration of Legionella pneumophila.
  • 10 x 10L of the test material for the enumeration of Legionella spp.

ANALYSIS

The analysis must be performed following the analytical procedure prescribed by the standard requested or equivalent methods. The test sample should be analysed under the same conditions 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, etc. (e.g. operator 1/operator 2, instrument A/instrument B, etc..).

  • 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 (sales@qualitychecksrl.com) or by FAX (0039 0656562874).

    REQUEST A QUOTE 2020


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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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