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pH <791> PT

Proficiency Testing Material



suitable for USP 791

Quality Level


ampule of 3 × 100 mL




matrix material

General description

pH <791> 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® Pharmaceutical Proficiency Testing scheme is mainly designed to meet the needs of the pharmaceutical industry.
The pharma PT samples allow laboratories to demonstrate their competence in following compendial USP methods of analysis. They can be used to assure accreditors or auditors that the lab processes are followed accordingly. Our pharmaceutical PT scheme covers products under categories such as Chemical Tests and Assays, Physical Tests and Determinations and Microbiological Tests.

Type of PT Scheme:

All information regarding the use of pH <791> proficiency testing standard can be found in the reporting packet which will be available to download at PT Portal.


pH <791> proficiency testing material comprises a buffer solution of pH ranging from 5.0 to 10.00 for standardization purposes in pharmaceutical analysis.

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

  • This PT sample is packaged as a 100 mL ready-to-use whole volume.
  • The PT sample has been autoclaved for preservation.

Sample Preparation
  • This sample contains a solution for direct analysis of pH (range 5-10).
  • No sample preparation is necessary.
  • Allow the sample to reach 20 ºC prior to analysis.

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 Kit containing three samples ranging from pH 5.0 to 10.00

Proficiency Testing Schedule (2022-2023)

PHARM22-2 April 6 - May 20, 2022
PHARM22-4 October 5 - November 18, 2022

PHARM23-2 April 5 – May 19, 2023
PHARM23-4 October 4 – November 17, 2023

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

Legal Information

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



    pH(791) - Sample A PEP010A-100ML 4 - 10
    pH(791) - Sample B PEP010B-100ML 4 - 10
    pH(791) - Sample C PEP010C-100ML 4 - 10



Signal Word


Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Met. Corr. 1 - Skin Irrit. 2

Storage Class Code

8A - Combustible, corrosive hazardous materials



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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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