Accessibility statement

The Institute of Natural Sciences is doing its utmost to make the information available on this website accessible to all, in accordance with the Act of 19 July 2018 on the accessibility of websites and mobile applications of public administrations. Consult the full text of the Act of 19 July 2018 on the website of the Moniteur Belge (in French).

This accessibility statement applies to the website: Natural sciences.

Compliance status

Based on a simplified audit, we can conclude that the website partially complies with the European standard EN 301 549 on accessibility of IT-applications. Please consult the pdf with the full text of EN 301 549 standard on the ETSI website.

Full compliance can only be guaranteed after performing an in-depth audit.

For more information, please consult the report on the simplified audit.

Non-accessible content

Some pages of the website contain non-accessible content and do not fulfil the following criteria:

  • Some pages contain link headings that only describe the function of the link for an anchor element.
  • Some pages contain text elements with underlining or special characters without semantic highlighting.
  • Some pages contain section headers that are not identified by h1-h6 tags.
  • Some pages contain elements with insufficient contrast, i.e. with a contrast ratio of less than 4.5:1 between text (including text in image form) and text background.
  • Some pages contain elements with insufficient contrast, i.e. with a contrast ratio of less than 3:1 between text (including text in image form) and text background.
  • Some pages contain frame and iframe elements that are not labelled accordingly via a title attribute.
  • Some pages do not contain links at the top of each page that lead directly to the main content area, links at the top of a repeating content block that lead to the end of that block and links at the top of the page that lead to the individual content areas.
  • Some pages contain duplicate ID values.
  • Some pages do not use form elements and links.

Some pages on the site contain files (pdf, documents, videos, etc.) for which accessibility can’t be guaranteed with a simplified audit.

Proposed alternatives

There is currently no alternative for the non-accessible content. If you have any questions or problems to use a part of the content, please contact us.

Preparation of this accessibility statement

We have prepared the accessibility statement on the basis of:

  • A critical analysis on the basis of norm EN 301 549
  • Manual checks
  • The audit report

The audit took place on 24/12/2025.

Consult the report on the simplified audit for this website.

This statement was drawn up on 24/11/2023.

The last revision of this statement was done on 28/01/2026.

Improvement plan

We are constantly striving to improve the accessibility of our website. This is our action plan:

  • Correcting errors in the content: our editorial team is trained to correct content issues (such as insufficient contrast, missing image descriptions or incorrect title hierarchy) as soon as they are identified.
  • Resolving technical issues: technical issues discovered during our tests or reported by users are noted and addressed. We plan to implement these technical fixes at least once a year during our scheduled updates.

Contact details

Do you have questions or comments about the accessibility of this website? Please carry out the following steps in the order listed below:

  1. The Institute of Natural Sciences
    Address: 29 Rue Vautier, 1000 Brussels
    Telephone: +32 2 627 42 11 
    You can also contact us by e-mail at info@naturalsciences.be.
  2. Complaints procedure
    If you are not satisfied with the response or if you receive no reply, you can go through our complaints procedure via the complaints form (in French).

  3. Federal Ombudsman
    If the response from the Institute of Natural Sciences is not satisfactory, please contact our federal ombudsman.
    Address: Rue de Louvain 48, bte 6, 1000 Brussels
    Telephone: 0800 999 61 (free number) or +32 2 289 27 27 (if you are calling from abroad)
    Email: contact@federalombudsman.be
    Website of the Federal Ombudsman