The website uses cookies to allow us to better understand how the site is used. By continuing to use this site, you consent to this policy. Click to learn more.
The Clean Screen® XCEL solid phase extraction columns are a line of sample prep phases designed to reduce the number of steps in the extraction, and therefore the amount of time and solvent necessary to complete the sample cleanup. Further advantages include reduced sample size and improved cleanliness and recovery. The Xcel II column is designed solely for the extraction of the THC metabolite.