Cartridge Check Valve Housing, 2/pk Back Catalog number: CTS-21010 Manufacturer: SCIENCIX Availability: In the manufacturer's stock Price on request - + Recommended CTS-11315 Needle Seal, PEEK™ SIL-20 Price on request CTS-7550 Performance Autosampler Needle Price on request CTS-3102 Sapphire Plunger Price on request