Interlaboratory Proficiency testing: Chemical & Physical-chemical parameters in natural waters

Interlaboratory Proficiency testing: Chemical & Physical-chemical parameters in natural waters

Distribution Schedule 2022



Round Registration
deadline		 Despatch
samples		 Reporting
deadline		 Final Report
Round February 2022 21/01/2022 07/02/2022 04/03/2022 21/03/2022
Final Reports in the Customer Area
Round May 2022 29/04/2022 16/05/2022 10/06/2022 27/06/2022
Final Reports in the Customer Area
Round September 2022 09/09/2022 26/09/2022 21/10/2022 08/11/2022
Registration Deadline: 09/09/2022
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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 physical chemical parameters in natural waters (ex. drinking water, mineral water, groundwater, etc.).

Interlaboratory proficiency testing organized in accordance with the standard ISO/IEC 17043:2010 - Conformity assessment — General requirements for proficiency testing and accredited by ACCREDIA, Italian accreditation body, with the accreditation number PTP n. 0014 P. Download the Accreditation Certificate.

Parameters

  • Alkalinity
    (25.0 - 400 mg/L CaCO3)
  • Ammonium
    (0.10 - 1.50 mg/L NH4)
  • Bromate [°]
    (5.00 - 50.0 microg/L)
  • Calcium
    (10.0 - 150 mg/L)
  • Chlorate [°]
    (50.0 - 500 microg/L)
  • Chloride
    (10.0 - 200 mg/L)
  • Chlorite [°]
    (100.0 - 1000 microg/L)
  • Conductivity (20 oC)
    (100 - 1500 microS/cm)
  • Fluoride
    (0.50 - 5.00 mg/L)
  • Magnesium
    (2.00 - 40.0 mg/L)
  • Nitrate
    (5.00 - 50.0 mg/L NO3)
  • Nitrite
    (0.10 - 2.00 mg/L NO2)
  • Permanganate index [°]
    (1.00 - 20.0 mg/L O2)
  • pH (20 oC)
    (6.50 – 9.50 U)
  • Phosphate
    (1.50 - 15.0 mg/L PO4)
  • Potassium
    (1.00 - 50.0 mg/L)
  • Sodium
    (5.00 - 200 mg/L)
  • Sulphate
    (10.0 - 300 mg/L SO4)
  • Total Dissolved Solids (Dried at 180°C) (100 - 1500 mg/L)
  • Total Hardness
    (5.00 - 30.0 oF )
  • Total Organic Carbon (TOC) [°]
    (1.00 - 20.0 mg/L C)
  • Turbidity [°]
    (1.00 - 20.0) NTU

Proficiency test item

  • 1 x 1000 mL of the test material ready to use for the determination of all parameters except Bromate, Chlorate, Chlorite, Permanganate index, TOC and Turbidity.
  • 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 Bromate.
  • 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 Chlorate and Chlorite.
  • 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 Permanganate index and TOC.
  • 1 x 450 mL of the test material ready to use for the determination of Turbidity.

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..).

  • 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 2022 (PDF)

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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. [°]: The measurands marked with the symbol [°] are not included in the scope of accreditation of this
    proficiency testing.

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