Custom Premix Selecting "Custom Premix" option means that all of the beads you have chosen will be premixed in manufacturing before the kit is sent to you.
Safety Data Sheet for MILLIPLEX MAP Mouse TH17 Magnetic Bead Panel - Premixed 25 plex - Immunology Multiplex Assay MT17MAG47K-PX25
Material Safety Data Sheet or SDS for MILLIPLEX MAP Mouse TH17 Magnetic Bead Panel - Premixed 25 plex - Immunology Multiplex Assay MT17MAG47K-PX25 from Merck for download or viewing in the browser.