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Anionen - Gesamtvolumen - WS

Proficiency Testing Material

WS Anions, Anions - Whole Volume - Water Supply (WS)



bottle of 1 × 500 mL


in water




matrix material



Allgemeine Beschreibung

Anions - Whole Volume - WS proficiency testing material is produced in accordance with ISO/IEC 17043:2010. Also referred to as Potable Water or Water Supply sample, this sample is produced according to TNI requirements. However, please note, this sample may include non-TNI analytes as well. The lower criteria from the TNI tables mimic the levels common to drinking water samples. The PT portfolio allows our test components to offer significant performance data to monitor and prove competency to customers, accreditation bodies or both.

Supelco® is a global proficiency testing (PT) provider that manufactures best-in-class environmental and pharmaceutical PT products. Our WS program is designed to meet the quality assurance requirements in compliance with the Safe Drinking Water Act (SDWA), thereby ensuring the analytical competence of your laboratory or drinking water facility.

Type of PT Scheme: Water analysis - Water Supply (WS)

Matrix: Water Supply/Drinking water

Analyte/s: Values of analytes vary lot to lot.

All information regarding the use of Anions - Whole Volume - Water Supply (WS) Proficiency Testing standard can be found in the reporting packet which will be available to download at PT Portal.


Anions - Whole Volume - WS proficiency testing material is suitable for testing the WS anions in water supply/drinking water.

Have any questions? Explore our FAQs.
For more information on this product, please contact our PT Service Team..


500 mL

Leistungsmerkmale und Vorteile

We have a vast portfolio of environmental PT schemes with "fit-for-purpose" samples to help you meet the needs of the laboratory.

Our proficiency testing (PT) program is a benchmark to:

  • provide staff with an insight into their laboratory′s performance, to verify the accuracy and reliability of their testing process
  • provide a comparison of performance with that of other laboratories, nationally and internationally
  • test and educate staff, provide a better understanding of the impact of incorrect results and identify areas where there may be problems
  • provide an independent evaluation of laboratory performance
  • demonstrate to clients, colleagues and accreditation bodies that there is a commitment to quality

Angaben zur Herstellung


  • The PT sample has been autoclaved for preservation.
  • The sample loses preservation when opened.
  • The sample must be stored at 4 °C.
  • This sample is a whole volume sample, no dilutions required.

Sample preparation

  • The sample is ready for analysis.
  • Analyze within 28-days hold time.

Lagerung und Haltbarkeit

Please refer to sample label for expiration date, specific storage temperature, and specific storage conditions.

Sonstige Hinweise

Are you new to Supelco® Proficiency Testing? Be sure to register your account details in the PT Portal before placing your order.
This will provide access to data entry, reporting packets and final reports. Registrations will be approved shortly after your order is placed. For further questions, write to us at

When placing your order online, please indicate your study preference under the ′your reference′ column. Available studies can be viewed at the bottom of the page.
Click here to learn more about Quick-Turn Studies (on-demand proficiency tests that are offered depending on lot availability). The Quick-Turn results are released within 48-72 hours whereas scheduled study reports are released within 21 days.

Proficiency testing samples are presented as single blind. No values for the samples are released until the testing period concludes.

Proficiency Testing Schedule (2022-2023)

Drinking Water
WS22-2 March 23 - May 6, 2022
WS22-4 September21 - November 4, 2022

WS23-2 March22 – May 5, 2023
WS23-4 September 20 – November 3, 2023

Quick-Turn Study (on demand proficiency test that is offereddepending on lot availability)

Rechtliche Hinweise

Supelco is a registered trademark of Merck KGaA, Darmstadt, Germany



    Chloride 20-160 mg/L
    Fluoride 1-8 mg/L
    Nitrate as NO3 1-44.3 mg/L
    Nitrate as N 3-10 mg/L
    Total nitrate+nitrite as N 3-10 mg/L
    Nitrite as NO2 1-6.6 mg/L
    Nitrite as N 0.400 - 2.00
    Orthophosphate as P 0.500 - 5.50
    Sulfate 25-250 mg/L
    See All (9)


12 - Non Combustible Liquids



Flammpunkt F

Not applicable

Flammpunkt C

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service