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 LiChrospher® 100 RP-18 endcapped (5 µm) LiChroCART® 250-4 150838
Material Safety Data Sheet or SDS for LiChrospher® 100 RP-18 endcapped (5 µm) LiChroCART® 250-4 150838 from Merck for download or viewing in the browser.