ZORBAX Original NH2, 70Å, 4.6 x 250 mm, 5 µm, 400 bar pressure limit P/N: 880952-708 Manufactor: Agilent USP: L8 Guard: 820950-908 (ZORBAX Original NH2, 70Å, 4.6 x 12.5 mm, 5 µm, 400 bar pressure limit, guard cartridge (ZGC), 4/pk) Holder: 820888-901 or 820999-901