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-A11372 Tube Assy, Transducer to Check Valve, I2V Price on request CTS-0069 Tubing, Head to Tee Price on request CTS-0720 Inlet Check Valve Assembly Price on request