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-A11376 Mixer Assembly, 100μL Price on request CTS-11434 Sapphire Plunger Price on request CTS-A11431-02 Cartridge Check Valve Housing, 2/pk Price on request