Cartridge, BioAcquity, I2V Back Catalog number: CTS-21192 Availability: In the manufacturer's stock Price on request - + Recommended CTS-10566 Alliance Head Plunger Seal Kit, 2/pk Price on request CTS-21163 Rotor Seal, 2-Groove Price on request 11-3795 Sapphire Plunger w/Holder Price on request