Performance Autosampler Needle Back Catalog number: CTS-7550 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21567 PM Kit, Seal Wash for Binary Pump G4240A Price on request CTS-21163 Rotor Seal, 2-Groove Price on request 11-1596 Piston Assembly, Sapphire Price on request