Nitrosamines/Nitroaromatics - WP

Proficiency Testing Material, Concentrate for dilution to 1L


Quality Level


ampule of 2 × 2 mL


in acetonitrile

Featured Industry



matrix material

storage temp.


General description

Nitrosamines/Nitroaromatics - WP proficiency testing material is produced in accordance with ISO/IEC 17043:2010. 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. Most water PT samples are available as concentrates or ready-to-use volumes giving the end-user flexibility in selecting samples that will fit their exact needs. Our WP program is designed to meet the quality assurance requirements, thereby ensuring the analytical competence of your laboratory.
These samples are typically provided in duplicate for use in case of lab mishap, for QC purposes or to analyze multiple methods.

Type of PT Scheme: Water analysis - Water Pollution (WP)

Matrix: Water Pollution/Wastewater

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

All information regarding the use of Nitrosamines/Nitroaromatics - WP can be found in the reporting packet which will be available to download at PT Portal.


Nitrosamines/Nitroaromatics - WP is an inorganic non-potable water (NPW) PT standard, suitable for testing nitrosamines/nitroaromatics in water pollution/wastewater.

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

Features and Benefits

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

Preparation Note


Randomly contains a minimum 80% of the analytes listed.

  • This PT sample is provided as a concentrate requiring dilution into reagent water.
  • The PT sample can be evaluated for each analyte listed on the report form.
  • If there are any analytes in the above list you wish not to be evaluated for, leave the associated line blank on the report form.
  • This PT sample is packaged as a 1.5 mL concentrate.
  • The solvent for this sample is acetonitrile.
  • The PT sample is not preserved.
  • The sample must be stored at 4 ºC.

Sample Preparation

  • Fill a 1000 mL Class A Volumetric Flask with 900 mL of organic-free reagent water.
  • Allow the ampule concentrate to equilibrate to room temperature.
  • Open the ampule and pipet exactly 1.0 mL of the concentrate into the flask.
  • Fill to volume and mix well.
  • This represents the sample for analysis.

Storage and Stability

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

Other Notes

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 (2021-2022)

WP21-2March 24 - May 7, 2021

WP22-2March 23 - May 6, 2022

Legal Information

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



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Signal Word



UN 1648 3 / PGII

WGK Germany


Flash Point(F)

35.6 °F - closed cup - Solvent

Flash Point(C)

2 °C - closed cup - Solvent

Certificate of Analysis

Certificate of Origin

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