Resources for conformity assessment

The CASCO Toolbox

CASCO has produced a number of standards related to conformity assessment practices. These are referred to as the CASCO Toolbox and cover topics such as the operating of testing laboratories, marks of conformity, accreditation and the mutual recognition of conformity assessment results.

Learn more by consulting the full list of CASCO Standards

Presentations on CASCO standards

For some of the recently published CASCO standards, the experts of the Working Groups who developed them have done a Powerpoint presentation to highlight the main elements of the document and show the differences with the former version. The slides can be used by anyone doing a presentation or simply to learn about the new standard.

All presentations are available here.

CASCO Clarification Process

People working in conformity assessment sometimes have questions about how to interpret ISO/IEC standards on this topic. In order to ensure consistency in the implementation of its standards, CASCO has set up a clarification process (replacing the former interpretation process). The clarification is done by the maintenance group responsible for the specific ISO/IEC conformity assessment standards (17000 series) and the clarification decision represents a consensus position on the intent of the working group. Clarifications cannot be considered as new requirements. These are considered for inclusion in the relevant standards only when they are revised. Until they are included in a standard they have no binding effect and are implemented at the discretion of interested parties.

All clarification requests that have been addressed are available here.

How to make a Clarification request

All the details on how to submit a clarification request can be found in the document Casco Clarification Process. Once you have read the process and that you fulfil the criteria for requesting a clarification please use this form.

Please note: Interpretation/Clarification requests for standards developed by other Committees in ISO should be referred directly to the secretary of the committee in question.


CASCO annually holds workshops in conjunction with its plenary meetings. These workshops are designed to allow a fruitful exchange of experience and practice in the fields covered. All past presentations and related documents can be found here.

For more information on these workshops and how to get involved please contact casco@iso.org.

CASCO communiqués

CASCO has issued a number of important joint communiqués with regard to the transition to revised CASCO documents or to specifically address an important issue that requires clarification.

These are given here and can be accessed directly.

Contact CASCO

Sean MacCurtain
Sean MacCurtain
CASCO Secretary
ISO Central Secretariat

Conformity Assessment tools for regulators

Designed for standards developers, conformity assessment bodies and regulators, this online resource provides tools to support public policy

Useful publications

Building trust

A handbook covering all aspects of conformity assessment and its role in international trade.

ISO survey - 2015

Find out how many certificates to ISO management standards are awarded in each country, each year.