The Brazilian Center for Research in Energy and Materials (CNPEM), registered under corporate tax ID (CNPJ) number 01.576.817/0001-75, is a social organization overseen by the Ministry of Science, Technology and Innovation (MCTI), responsible for managing the Brazilian Synchrotron Light National Laboratory (LNLS), Brazilian Biosciences National Laboratory (LNBio), Brazilian Biorenewables National Laboratory (LNBR), and Brazilian Nanotechnology National Laboratory (LNNano), and the ILUM School of Science.

This Policy on Cookies is a document that supplements the Privacy Policy of the Brazilian Center for Research in Energy and Materials (CNPEM), which is available at

Here users can find information about what cookies are, what cookies the CNPEM uses on its websites, what they do, and how to adjust their preferences.

1. What are Cookies?

Cookies are small text files or pieces of information that are sent to computers, smartphones, or other devices with internet access when users visit the CNPEM’s websites and its apps.

Cookies contain information about your visit to our web pages and remember only information related to your preferences.

In this way, these web pages stores and recover data about how users browse in order to improve their experiences, for example. It is important to note that cookies do not contain specific personal information such as sensitive or banking data.

Your browser stores cookies on your device’s hard disk, but they only take up a tiny amount of memory and do not affect performance. Most of this data is deleted soon after you finish browsing, as described in the following section.

2. Types of Cookies

In terms of ownership, cookies may be:

First-party (proprietary) cookies: these cookies are defined by the CNPEM or by third parties on our behalf.

Third-party cookies: these cookies are defined by trusted third parties in our apps.

In terms of how long they last, there are three types of cookies:

Session cookies: these cookies are temporary and disappear each time you close the site and finish browsing.

Persistent or permanent cookies: these cookies stay on your device for a certain period or until you delete them.

In terms of purpose, cookies may be:

Strictly necessary cookies: These cookies are needed for the site to function and cannot be turned off in our systems. They are normally only configured in response to user actions that correspond to a request for services, such as defining your security settings, logging in, or filling out a form. You can adjust your browser settings to block or warn you about these cookies, but some parts of the site will not work. These cookies do not store any identifiable personal data.

Performance cookies: These cookies allow us to count visitors and sources of web traffic in order to measure and improve the performance of our site. They allow us to identify which pages are more or less popular, and how visitors browse our site. All the data collected by these cookies are aggregated and consequently anonymous. If these cookies are not allowed, there is no way to determine when a user visited the site.

Functionality cookies: These cookies allow the site to provide better functionality and personalization. They may be implemented by the CNPEM or by external providers whose services have been added to our pages. If these cookies are not allowed, some or even all of the functionalities of the web page may not work correctly.

Advertising cookies: These cookies may be implemented by the CNPEM site or by our publicity partners. They may be used by these institutions to create a profile of user interests and to display relevant ads on other websites. They do not directly store personal data, but are specifically targeted to the user’s browser and device. If these cookies are not allowed, the user will receive less directed advertising.

Social media cookies: These cookies are implemented by a series of services from social media that allow users to share CNPEM content with their social media contacts. They can track browsing on other sites and create a profile of the user’s interests; this may affect the content and messages users see on other sites. IF these cookies are not allowed these sharing tools may not be available.

3. Why do we use cookies?

The CNPEM uses cookies to provide a better user experience on our websites based on user preferences and browsing behavior.
The CNPEM analyzes how the Center’s applications are utilized in order to adapt the content to be more relevant, as well as to remember user preferences.

Cookies are part of this process, since they store, read, and implement the data necessary for the CNPEM to make this possible.

4. What kind of cookies do we use?

Because cookies capture user data, we suggest reading the CNPEM’s Privacy Policy. It is important to remember that users can inspect and manage their browser settings and permissions for each type of cookie.

5. Managing cookies

Cookies are only installed with user consent. Although most internet browsers are configured to automatically accept cookies, users can review and change their permissions at any time to block or accept cookies or to receive cookie notification messages when cookies are sent to their device.

Currently, cookie permission is requested when users first visit CNPEM applications. Only after acceptance will cookies be activated.
To do so, the Center uses an initial warning message on its websites. This message not only requests user permission but also states that continuing to browse the CNPEM sites corresponds to providing consent.

As mentioned above, users can change their permissions, blocking or refusing cookies, at any time and at no cost; cookies can also be configured on a case-by-case basis. However, revoking consent or refusing certain cookies may stop some platform resources from functioning properly.

Users can manage their cookie preferences in their browser settings.

6. Final provisions

At the CNPEM, privacy and trust are essential for user relations. We are always adapting to implement the highest security standards.

For this reason, we reserve the right to make changes to this Policy on Cookies at any time. Changes will take effect immediately after publication, and users will be notified. By continuing to browse our sites, users agree to these changes. We suggest that users always review the Policy on Cookies, as well as our Privacy Policy.

If you have any questions about this Policy on Cookies, please contact us via the channels below:

Contact information:

This Policy on Cookies takes effect on March 16, 2022.

Antonio José Roque da Silva
Director General
Brazilian Center for Research in Energy and Materials (CNPEM)