118- STYROS® 2R Simulated-Monolith™ Polymeric Reversed Phase. Separation of 9 Phenones on Narrow Bore column of 2.1 mm ID 118- STYROS® 2R Simulated-Monolith™ Polymeric Reversed Phase. Separation of 9 Phenones on Narrow Bore column of 2.1 mm ID