Piston Assembly, Sapphire Back Catalog number: 11-1596 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21591 PM Kit, G4226A Price on request CTS-11366 Piston, High Pressure Price on request CTS-10396 Washer Thermo/Dionex™ Model: P1000, P2000, P4000 Price on request