Check Valve Cartridge, 2/pk Back Catalog number: CTS-A094 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-10323 Sapphire Plunger Price on request CTS-A096 Syringe Assembly, 250μL Price on request CTS-11315 Needle Seal, PEEK™ SIL-20 Price on request