Rack* for 3mL SPE-Cartridge Back Catalog number: 11631 Availability: In the manufacturer's stock Price on request - + Recommended 730189.1 Chromab. valve, brass, 1 pcs. 49,64 € 81203 Cover, gasket, & 12 stopcocks 207,19 € on sale 730189.12 Chromab. valves, brass, 12 pcs. 468,98 €