Check Valve Cartridge, 2/pk Back Catalog number: CTS-10600 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21095 Seal Wash (0.0787 ID, Fixed, Bio), 2/pk Price on request CTS-7550 Performance Autosampler Needle Price on request CTS-21287 Needle Kit, 15 µL with Needle Seat and Needle Guid Price on request