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VOAs in Soil - Medium Level - PT

Proficiency Testing Material

SOIL Volatiles - Medium Level

Quality Level


pkg of 1 × 25 g


in methanol






matrix material

storage temp.


General description

VOAs in Soil - Medium Level - PT proficiency testing material is produced in accordance with ISO/IEC 17043:2010. This product is produced according to TNI requirements. However, please note, this sample may include non-TNI analytes as well. 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. We are the world leader in the manufacturing of real-world soil, sediment and sewage sludge PT products.

Type of PT Scheme: Solids/Soils/Hazardous Waste

Matrix: Soil

Analyte/s: Randomly contains a minimum 60% of the analytes listed. Values of analytes vary lot to lot.

All information regarding the use of VOAs in Soil - Medium Level - PT can be found in the reporting packet which will be available to download at PT Portal.


VOAs in Soil - Medium Level - PT is a soil/hazardous waste proficiency testing material, suitable for testing volatile organics in soil samples. Our soil PT samples behave as real samples; and, unless there is no alternative, are not simply spikes added to a blank soil. They are designed to meet the requirements of national, regional and state-specific accreditation bodies (TNI, USEPA, UKAS) for quality assurance and continuous improvement.

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


NOTE: The reporting units have changed to μg/Kg for all analytes to meet TNI requirements. The concentrations have remained the same.
  • This standard consists of 25 g of soil containing volatile organics.
  • The soil has been chemically stabilized with 25 mL of methanol to minimize the degradation of the sample.
  • The evaluation of results will be based on study statistics as required by TNI standards.
  • This standard may not contain all the compounds listed on the Report Forms in accordance with TNI standards. For analytes not detected report a zero "0" or a "<" and your detection limit.
  • This PT sample is intended for methods USEPA SW846 Method 8240 and 8260 using methanol or purge and trap extraction (EPA 5030).

Sample Preparation

  • The sample is provided pre-extracted with methanol as specified by USEPA Method 5030.
  • Shake sample for two minutes prior to sampling.
  • Using a gas-tight syringe, aliquot 100 μL of methanol extract and inject into your purge and trap vessel below the surface of 5 or 25 mL of organic-free water. Using more than 100 μL may exceed the trapping capacity and detector response of the purge and trap system.
  • After sampling, tightly reseal the vial ensuring there is no sample remaining between the vial rim, threads and cap.
  • Immediately complete other sample preparation according to your analytical procedures.
  • To calculate your results, use 25 g as the sample weight and 25 mL as the extraction volume. Report results as μg/kg.
  • Report on a wet weight basis, do not correct results for moisture content.
  • Provide all the requested information; note that the results of the analysis are to be reported on a wet weight basis.
  • The method used must be reported.

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 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)

LPTP22-S2 April 6 - May 20, 2022
LPTP22-S4 October 5 - November 18, 2022

LPTP23-S2 April 5 – May 19, 2023
LPTP23-S4 October 4 – November 17, 2023

Quick-Turn Study (on demand proficiency testthat is offered depending on lot availability)

Legal Information

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



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    sec-Butylbenzene 1000-20000 μg/kg
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    4-Chlorotoluene 1000-20000 μg/kg
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    Dibromochloromethane 1000-10000 μg/kg
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    Dibromomethane 2000-10000 μg/kg
    1,2-Dichlorobenzene 1000-10000 μg/kg
    1,3-Dichlorobenzene 1000-10000 μg/kg
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    1,1-Dichloroethane 1000-10000 μg/kg
    1,2-Dichloroethane 1500-10000 μg/kg
    1,1-Dichloroethylene 2000-10000 μg/kg
    cis-1,2-Dichloroethylene 2000-10000 μg/kg
    1,2-Dichloropropane 2000-10000 μg/kg
    1,3-Dichloropropane 2000-10000 μg/kg
    2,2-Dichloropropane 1000-20000 μg/kg
    cis-1,3-Dichloropropene 2000-10000 μg/kg
    1,1-Dichloropropene 1000-20000 μg/kg
    trans-1,3-Dichloropropene 2000-10000 μg/kg
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    Hexachloroethane 1000-20000 μg/kg
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    Methyl acetate 1000-10000 μg/kg
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    1,1,2-Trichloroethane 1000-10000 μg/kg
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Storage Class Code

4.1B - Flammable solid hazardous materials



Flash Point(F)

51.8 °F - closed cup - Solvent

Flash Point(C)

11 °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).

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