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Volatile 1 -WS

Water Supply Proficiency Testing Material

Quality Level


ampule of 2 × 1.2 mL


in methanol




matrix material

storage temp.


General description

Volatile 1 - WS 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 WS program is designed to meet the quality assurance requirements in compliance with Safe Drinking Water Act (SDWA), thereby ensuring the analytical competence of your laboratory or drinking water facility.
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 Supply

Water Supply/Drinking water

Analyte/s: Only 80% of analytes will be spiked in this sample. Values of analytes vary lot to lot.

All information regarding the use of Volatile 1 - WS proficiency testing standard can be found in the reporting packet which will be available to download at PT Portal.


Volatile 1 - WS proficiency testing material is suitable for testing volatile compounds in water supply/drinking water.

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


  • The PT sample is provided as a 1.2 mL concentrate.
  • The solvent is methanol.
  • The PT sample is not preserved.
  • The sample must be stored at 4 °C.

Sample Preparation

  • Fill a 100 mL Class A Volumetric Flask with 90 mL of organic-free reagent water.
  • Allow the ampule concentrate to equilibrate to room temperature.
  • Open the ampule and pipet exactly 20 μL of the concentrate into the flask.
  • Fill to volume and mix well.
  • This represents the sample for analysis.
  • Report results in μg/L.

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)

Drinking Water
WS22-2 March 23 - May 6, 2022
WS22-4 September 21 - November 4, 2022

WS23-2 March 22 – May 5, 2023
WS23-4 September20 – November 3, 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



    Benzene 2-20 μg/L
    Bromobenzene 2-20 μg/L
    n-Butylbenzene 2-20 μg/L
    sec-Butylbenzene 2-20 μg/L
    tert-Butylbenzene 2-20 μg/L
    Chlorobenzene 2-20 μg/L
    Chloroethane 2-20 μg/L
    2-Chlorotoluene 2-20 μg/L
    4-Chlorotoluene 2-20 μg/L
    1,2-Dichlorobenzene 2-20 μg/L
    1,3-Dichlorobenzene 2-20 μg/L
    1,4-Dichlorobenzene 2-20 μg/L
    1,1-Dichloroethane 2-20 μg/L
    1,2-Dichloroethane 2-20 μg/L
    1,1-Dichloroethylene 2-20 μg/L
    cis-1,2-Dichloroethylene 2-20 μg/L
    1,2-Dichloropropane 2-20 μg/L
    1,3-Dichloropropane 2-20 μg/L
    1,1-Dichloropropene 2-20 μg/L
    cis-1,3-Dichloropropene 2-20 μg/L
    trans-1,3-Dichloropropene 2-20 μg/L
    trans-1,2-Dichloroethylene 2-20 μg/L
    Ethylbenzene 2-20 μg/L
    Hexachlorobutadiene 5-50 μg/L
    Cumene 2-20 μg/L
    4-Isopropyltoluene 2-20 μg/L
    Methylene chloride (Dichloromethane) 2-20 μg/L
    Methyl tert-butyl ether (MTBE) 5-50 μg/L
    Naphthalene 5-50 μg/L
    n-Propylbenzene (1-Phenylpropane) 2-20 μg/L
    Styrene 2-20 μg/L
    1,1,1,2-Tetrachloroethane 2-20 μg/L
    1,1,2,2-Tetrachloroethane 2-20 μg/L
    Tetrachloroethylene (Perchloroethylene) 2-20 μg/L
    Toluene 2-20 μg/L
    1,2,3-Trichlorobenzene 5-50 μg/L
    1,2,4-Trichlorobenzene 2-20 μg/L
    1,1,2-Trichloroethane 2-20 μg/L
    Trichloroethene (Trichloroethylene) 2-20 μg/L
    1,2,3-Trichloropropane 2-20 μg/L
    1,2,4-Trimethylbenzene 2-20 μg/L
    Mesitylene 2-20 μg/L
    Vinyl chloride 2-50 μg/L
    (m+p)-Xylene 2-50 μg/L
    o-Xylene 2-50 μg/L
    Xylene, total 2-50 μg/L
    See All (48)

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)

49.5 °F - closed cup

Flash Point(C)

9.7 °C - closed cup

Regulatory Information


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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