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Öl und Fett - WP

Proficiency Testing Material, Concentrate for dilution to 1 L

NPW Oil and Grease, WP Oil and Grease, Oil and Grease in Water, Oil and Grease in Wastewater, Grease Oil Test




ampule of 2 × 2 mL


in 1-propanol




matrix material

Allgemeine Beschreibung

Oil and Grease - WP proficiency testing material is produced in accordance with ISO/IEC 17043:2010. Also referred to as non-Potable water or Water Pollution sample, this product is produced according to TNI requirements. However, please note, this sample may include non-TNI analytes as well. The higher criteria from the TNI tables mimic the levels common to wastewater 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. 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 in compliance with Discharge Monitoring Report - Quality Assurance Program (DMR-QA), 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 Oil and Grease - WP can be found in the reporting packet which will be available to download at PT Portal.


Oil and Grease - WP is a non-potable water (NPW) PT standard, suitable for testing WP grease and oil in water pollution/wastewater.

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

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


  • This PT sample is a 2 mL concentrate.
  • The solvent for this sample is n-propanol.
  • The sample is suitable for methods EPA 1664, SM 5520B and other gravimetric methods. It is not suitable for IR methods.
  • The PT sample has not been preserved.

Sample Preparation

  • To prepare the solution, add 994 mL of reagent-grade water and 5 mL of 1:1 Hydrochloric Acid to a 2 L separatory funnel.
  • Open ampule PE1083-2ML (be careful to avoid cuts on glass) and transfer 1.0 mL of concentrate to the separatory funnel.
  • Mix well.
  • The sample is now ready for immediate analysis.
  • The sample should be analyzed with an approved gravimetric method because it is not suitable for an infrared method.
  • For calculations, assume that the initial sample volume was 1000 mL.

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 TestingͰ 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)

WP22-1 January 12 – February 25, 2022
WP22-2 March 23 - May 6, 2022
WP22-3 July 6 - August 19, 2022
WP22-4 September 21 - November 4, 2022

WP23-1 January 11 – February 24, 2023
WP23-2 March 22 – May 5, 2023
WP23-3 July 5 – August 18, 2023
WP23-4 September 20 – November 3, 2023

DMR-QA (US customers only)
DMR-QA 43 2023 Dates TBD

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



    C10-C32 Hydrocarbons 20-200 mg/L
    n-Hexane Extractable Material (O&G) 20-200 mg/L
    Oil and Grease (HEM-SGT) 10-100 mg/L




Eye Dam. 1 - Flam. Liq. 2 - STOT SE 3


Respiratory system


3 - Flammable liquids



Flammpunkt F

71.6 °F - closed cup - Solvent

Flammpunkt C

22 °C - closed cup - Solvent

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.

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