Needle Seat Back Catalog number: 11-2570 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10396 Washer Thermo/Dionex™ Model: P1000, P2000, P4000 Price on request CTS-A11133 Tube Assembly, Transducer to Check Valve Price on request CTS-5313 Compression Screw, SS Price on request