Performance Autosampler Needle Back Catalog number: CTS-7550 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21591 PM Kit, G4226A Price on request CTS-10788-5 Needle Wash Frit, 5/pk Price on request CTS-21566 PM Kit, Seal Wash for Binary Pump G4204A Price on request