Needle Kit, 15 µL with Needle Seat and Needle Guid Back Catalog number: CTS-21287 Availability: In the manufacturer's stock Price on request - + Recommended CTS-A11095 Check Valve, Double Ball & Seat Price on request CTS-A11372 Tube Assy, Transducer to Check Valve, I2V Price on request CTS-11315 Needle Seal, PEEK™ SIL-20 Price on request