Needle Guide Back Catalog number: 11-2591 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-A11342 Tube Assembly, Transducer to Check Valve Price on request 11-4073 LC-30AD Plunger Holder Assembly, UHP2 (w/Diaphragm Price on request CTS-10548 Gold Plunger Seal, Analytical Heads Price on request