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-21469 250 μL Syringe, High Pressure Price on request CTS-5464 Clip Ring, Plunger Retainer Price on request CTS-A157 Outlet Check Valve Price on request