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Proficiency Testing Material

Toxicity Characteristic Leaching Procedure (TCLP) - VOA - PT

Quality Level


ampule of 1 × 2 mL


in methanol






matrix material

General description

TCLP - VOA - PT in Soil 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. We are the world leader in the manufacturing of real-world soil and sediment PT products.

Type of PT Scheme: Solids/Soils/Hazardous Waste

Matrix: Soil

Analyte/s: This standard may not contain all the compounds listed.
Values of analytes vary lot to lot.

All information regarding the use of TCLP - VOA - PT can be found in the reporting packet which will be available to download at PT Portal.


TCLP - VOA - PT in Soil - PT is a soil/hazardous waste proficiency testing material, suitable for testing TCLP - Volatiles (VOA) 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.


2 mL

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


  • This standard consists of a 2-mL flame-sealed ampule containing the volatiles in soil concentrate and a 30-mL ampule containing approximately 30 g of Matrix soil.
  • The solvent for the Volatiles in Soil concentrate is Methanol. This standard may not contain all of the compounds listed. The evaluation of results will be based on study statistics.
  • For analytes not detected, report as zero "0" or a < and your detection limit. This PT sample is intended for methods USEPA SW846 Method 1311 ZHE.

Preparation Instructions

  • The sample is to be extracted using the solid waste method for sediment/soil using Zero Headspace Extraction (ZHE).
  • Weigh 10.0 g of the Volatiles in Soil Matrix and charge the ZHE.
  • Carefully snap the top off the Volatiles in the Soil ampule.
  • Inject 1 mL of the concentrate into the matrix by placing the syringe tip slightly below the surface of the matrix in the ZHE.
  • Complete the analysis per your normal procedures.
  • The results of the analysis are to be reported on a wet weight basis.
  • The method used must be reported.
  • Report on a wet weight basis; do not correct results for moisture content.

NOTE: Additional volume has been provided in case the method employed requires a larger soil volume. For example, if a 25 g sample is required, weigh 25 g of soil in the ZHE and spike 2.5 mL of the provided solution (maintain 1 mL: 10 g ratio).

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 (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 October4 – November 17, 2023

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

Legal Information

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



    Acetone .001-30000 μg/L
    Benzene .001-20000 μg/L
    2-Butanone (Methyl ethyl ketone, MEK) .001-20000 μg/L
    n-Butyl alcohol .001-20000 μg/L
    Carbon disulfide .001-20000 μg/L
    Carbon tetrachloride .001-20000 μg/L
    Chlorobenzene .001-20000 μg/L
    Chloroform .001-20000 μg/L
    1,4-Dichlorobenzene .001-20000 μg/L
    1,2-Dichloroethane .001-20000 μg/L
    1,1-Dichloroethylene .001-20000 μg/L
    Ethyl acetate .001-20000 μg/L
    Ethylbenzene .001-20000 μg/L
    Diethyl ether .001-20000 μg/L
    Isobutyl alcohol (2-Methyl-1-propanol) .001-20000 μg/L
    Methylene chloride (Dichloromethane) .001-200 μg/L
    Methyl isobutyl ketone (Hexone) .001-500 μg/L
    Tetrachloroethylene (Perchloroethylene) .001-200 μg/L
    Toluene .001-200 μg/L
    1,1,1-Trichloroethane .001-200 μg/L
    Trichloroethene (Trichloroethylene) .001-200 μg/L
    Trichlorofluoromethane .001-200 μg/L
    1,1,2-Trichloro-1,2,2-trifluoroethane .001-200 μg/L
    Vinyl chloride .001-200 μg/L
    Xylene, total .001-300 μg/L
    See All (25)

Signal Word


Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Flam. Liq. 2 - STOT SE 1

Storage Class Code

3 - Flammable liquids



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).

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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