Proficiency testing (PT): Chemical and Physical-Chemical parameters in natural waters


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
Registration deadline: 24/01/2020

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 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.).

Parameters

  • Alkalinity
    (25 - 400 mg/L CaCO3)
  • Ammonium
    (0.10 - 1.50 mg/L NH4)
  • Calcium
    (10 - 150 mg/L)
  • Chloride
    (10 - 200 mg/L)
  • Conductivity (20 oC)
    (100 - 1500 microS/cm)
  • Fluoride
    (0.50 - 5.00 mg/L)
  • Magnesium
    (2 - 40 mg/L)
  • Nitrate
    (5 - 50 mg/L NO3)
  • Nitrite
    (0.10 - 2.00 mg/L NO2)
  • Permanganate index
    (1 - 20 mg/L O2)
  • pH (20 oC)
    (6.5 – 9.5 U)
  • Phosphate
    (1.50 - 15.0 mg/L PO4)
  • Potassium
    (1 - 50 mg/L)
  • Sodium
    (5 - 200 mg/L)
  • Sulphate
    (10 - 300 mg/L SO4)
  • Total Dissolved Solids (Dried at 180°C) (100 - 1500 mg/L)
  • Total Hardness
    (5 - 30 oF )
  • Total Organic Carbon (TOC)
    (0.5 - 10 mg/L C)
  • Turbidity
    (2 - 30) NTU

Proficiency test item

  • 1 x 1000 mL of the test material ready to use for the determination of all parameters except Permanganate index, TOC and Turbidity.
  • 1 x 1000 mL of the test material to be prepared from a natural water matrix and a vial of the spiking solution for the determination of Permanganate index and TOC.
  • 1 x 1000 mL of the test material to be prepared from a natural water matrix and a vial of the spiking solution for the determination of Turbidity.

ADDITIONAL TESTING 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 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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