TOYOPEARL? HIC resins are hydrophobic interaction chromatography resins that offer the following advantages: strong affinity for water-soluble proteins, high recovery of mass and activity, high sample capacity up to 2-4 times that of gel media, fluctuating salt concentrations will not change the bed volume, mechanical stability to 7kg/cm squared (7 bar/100psi), stability at a wide pH range (2-12), clean in place with 0.5M NaOH, and autoclavable. The exclusion limit of 5x10? Da and large pore size, 1000?, enables these packings to separate very large proteins by a hydrophobic interaction mechanism, without size exclusion effects.