Transfer of biopharmaceutical products and reagents in a closed system. Gas exchange transfer. Sampling of biopharmaceutical products and reagents in a closed system. Storage of biopharmaceutical products and reagents. Use with bench top, pilot plant and production bioreactors. Use with sterile connecting devices and thermal or RF tubing sealers. OmniTop Sample Tubes are convenient devices that can be used to obtain fluid samples. Each OmniTop tube comes with a pre-attached 0.2um vent filter and 18" of C-Flex tubing. They are available with or without internal dip-tubes to facilitate removal of the fluid inside. OmniTop Samples Tubes can be aseptically connected to your bio reactor or other device using standard tubing welders. Sample Tubes can also be aseptically sealed and removed (wet or dry) using tubing sealers. Blue caps indicate the tubes are polypropylene. Purple caps indicate the tubes are polystyrene. For other sample tubes, see CLS-1407-T-325, CLS-1407-T-312, CLS-1407-T-310.