Aijiren Technologies, one of the leading technology companies for measurement engineering, offers a broad array of innovative analytical HPLC columns. Analytics-Shop offers the whole range of Aijiren HPLC columns: Packing Specification: Amino, (CN) Cyano, C18, C8, RP (Reversed Phase), etc. Pore Size: 80 A, 100 A, 120 A, 180 A, 300 A, 200 A