Cookie Policy

Cookies are files or pieces of information that may be stored on your computer when you visit the website. Cookies are used to distinguish you from another user and enables swift passage from one page to the next on our website. This allows us to understand how people use our website and to help us improve their structure and content. In this Cookie Policy, we provide you information about the differ types of cookies we use when you visit our website.

There is a difference between "Session cookies" and "Persistent cookies". Session cookies are temporary cookie files that will be erased when you leave the website. Persistent cookies consist of a text file sent by a web server to a web browser, which will stay in one of your browser's subfolders until you delete them manually or your browser deletes them based on the duration period contained within the persistent cookie's file.

Cookies on the Polysulphate website
The table below provides an explanation about the cookies we use on our website.

Cookie Name Function Expiry date
Selected language cookie SelectedLanguage Used to remember the selected language End of session / when browser is closed


Third party cookies
When you use our website, you may also be sent third party cookies. The table below provides an explanation about the third party cookies you may receive.

Cookie Name Function Expiry date
Google Analytics cookie __utma Stores the amount of visits, time of first, previous and current visit 2 years
Google Analytics cookie __utmb To check approximately how fast people leave: when a visit starts, and approximately ends 30 minutes
Google Analytics cookie __utmc To check approximately how fast people leave: when a visit starts, and approximately ends End of session / when browser is closed
Google Analytics cookie __utmz Records whether the visitor came from a search engine (and if so, the search keyword used 6 months
Google Analytics cookie __utmv Used for user-custom variables in Analytics 2 years
Click Dimensions cookie Cuvid Used to determine unique visitors to the site and it is updated with each page view. Additionally, this cookie is provided with a unique ID that the application uses to ensure both the validity and accessibility of the cookie as an extra security measure 2 years
Click Dimensions cookie Cusid This cookie is used to establish and continue a user session with the site. When a user views a page on the site, the script code attempts to update this cookie. If it does not find the cookie, a new one is written and a new session is established. Each time a user visits a different page on the site, this cookie is updated to expire in 30 minutes, thus continuing a single session for as long as user activity continues within 30-minute intervals This cookie expires when a user pauses on a page on the site for longer than 30 minutes
Click Dimensions cookie Cuvon Used to signal the last time a visitor viewed a page

30 minutes

Hotjar _hjIncludedInSample This cookie is set to let Hotjar know whether that visitor is included in the sample which is used to generate Heatmaps, Funnels, Recordings, etc.

1 year

Youtube YSC This cookie is set by the YouTube video service on pages with embedded YouTube video

End of session / when browser is closed

  VISITOR_INFO1_LIVE A cookie that YouTube sets that measures your bandwidth to determine whether you get the new player interface or the old.

8 months

  PREF This cookie stores your preferences and other information, in particular preferred language, how many search results you wish to be shown on your page, and whether or not you wish to have Google’s SafeSearch filter turned on.

1 year

  GPS Registers a unique ID on mobile devices to enable tracking based on geographical GPS location.

1 day


Third party cookies can be deleted manually by changing your cookie settings in your browser, as set out below. Blocking all cookies will, however, have a negative impact upon the usability of the website. If you block cookies, the functions set out under will no longer be available until website cookies are allowed.

Polysulphate uses analytical cookies to understand how visitors interact with our websites. With this information we are able to optimize the user interface and functionality of the website for a better performance. We use Google Analytics and Hotjar to gather this information. All the data contained in these cookies is completely anonymous and does not contain any personally identifiable information.
For further information on the privacy policy concerning Google Analytics and Hotjar, please visit:

Changing your cookie settings in your browser
Most browsers allow you to refuse to accept cookies. You can change the settings to block cookies or to alert you when cookies are being sent to your computer. There are a number of ways to manage cookies. Please refer to or to learn more about how to adjust or modify your browser settings.

In case you do not want to be tracked by Google Analytics, please refer to

Please note that by changing your cookie settings in your browser, the functions set out under 3 may no longer be available. As the website has been designed to take advantage of the use of cookies, should you configure your browser to decline their use, certain features of the website may not function correctly. We, or our service providers, may also use a technology stored in emails to help us confirm your reception of and response to our emails and to provide to you a more personalized experience.

Cookies and personal information
Cookies do not contain any information that personally identifies you, but personal information that we store about you may be linked, by us, to the information stored in and obtained from cookies.

Contact us
If you have any questions concerning our cookies or this Cookie Policy, please contact us at:

Cleveland Potash Ltd.,
Boulby Mine,
TS13 4UZ,
United Kingdom
[email protected]