Plunger Seal Back Catalog number: CTS-2294 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-21287 Needle Kit, 15 µL with Needle Seat and Needle Guid Price on request CTS-11434 Sapphire Plunger Price on request CTS-10597 Wash Tube Seal Kit, 4/pk Price on request