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 T-Cell Receptor Signaling Magnetic Bead Kit 7-Plex - Cell Signaling Multiplex Assay 48-690MAG
Material Safety Data Sheet or SDS for MILLIPLEX MAP T-Cell Receptor Signaling Magnetic Bead Kit 7-Plex - Cell Signaling Multiplex Assay 48-690MAG from Merck for download or viewing in the browser.