Corrosivity - PT

Proficiency Testing Material

EC Number:

Quality Level


pkg of 1 × 100 g



Featured Industry



matrix material

General description

Corrosivity 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


Values of analytes vary lot to lot.

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


Corrosivity - PT of the solids/soils hazardous waste proficiency testing scheme is suitable in environmental testing of 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


  • The PT sample is a pH buffered soil.
  • The sample size provided is 100 g of soil.
  • The PT sample has been sized to 100 mesh.
  • Store sample at room temperature.
  • Once opened sample should be used within 6 months or by the expiration date on the label, whichever is sooner.

Sample Preparation

  • The soil is to be extracted and analyzed using an appropriate extraction and analytical method to determine pH corrosivity such as USEPA Method SW-846 9040B or 9045C.
  • Mix prior to use.
  • No modification to the sample prior to subsampling is necessary.
  • Please list the determinative technique used for the analysis of this sample.
  • Report your results as pH units.

Storage and Stability

Please refer to sample label for expiration date, specifiic storage temperature, and specifiic 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 ptservice@milliporesigma.com.

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)

LPTP21-S1January 27 - March 12, 2021
LPTP21-S2April 7 - May 21, 2021
LPTP21-S3 July 21 - September 3, 2021
LPTP21-S4 October 6 - November 19, 2021

LPTP22-S1January 26 - March 11, 2022
LPTP22-S2April 6 - May 20, 2022
LPTP22-S3 July 20 - September 4, 2022
LPTP22-S4 October 5 - November 18, 2022

Legal Information

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



    Corrosivity (pH) 2.00 - 12.0 Units
    pH 2.00 - 12.0 Units
    Specific conductance, Conductivity (25ºC)


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin

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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