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.
Magna ChIP kits permit a rapid ChIP experiment in a single day and an easy optimization for any target antibody. Available with either protein A or protein G and containing essential positive and negative controls to ensure high quality results.
ChIP kits selection guide provides you with more information and details about each type of ChiPs : Description, Number of assays, Assay time, Availability with protein A or G, Agarose or Magnetic, etc..