On 6 September 2017, Mark Snyder (manager of the process chromatography R&D applications group at Bio-Rad Laboratories) gave an “Ask the Expert” presentation on process-scale column packing with CHT ceramic hydroxyapatite media. Snyder’s Presentation CHT is an incompressible mixed-mode chromatography medium using cation exchange and calcium-affinity interactions, and it is available in 40-μm and 80-μm particle sizes. This medium can be used to purify monoclonal, polyclonal, and bispecific antibodies; antibody fragments; other recombinant proteins and isozymes; viruses, viral particles, and…