Product Description
Turn a standard shake flask into a closed transfer vessel by swapping in a pre-plumbed, sterile cap. These bi-directional transfer caps let a peristaltic pump fill or empty the flask through attached tubing, then can be exchanged for a vent cap once the transfer is done.
This listing is for NEST catalog number C30223-DZC150B: Bi-Directional Transfer Cap for 3L Erlenmeyer Flask, TPE Tube 1/4" ID x 7/16" OD, Heat-Sealed End, Sterile, Case of 4 (4 x 1). Caps are sized for 125 mL, 250 mL, 500 mL, 1000 mL and 3L Erlenmeyer flasks, and the flask itself is not included. Depending on the item, the tubing is silicone or TPE and ends in a male CPC connector, a male Luer lock connector or a heat-sealed end for sterile welding. A 0.22 µm vent filter is built into each cap, and the one-piece molded construction reduces leak points and media residue. All items are supplied sterile, one per pack. Order it from LIGHT LABS alongside the rest of your NEST plastics and consumables.
Key Features
- Closed Transfer – Fill, feed or harvest through attached tubing without opening the flask
- Integrated Vent Filter – 0.22 µm membrane maintains sterile gas exchange
- Connector Choices – Male CPC, male Luer lock or heat-sealed tubing ends to match your workflow
- One-Piece Molding – Cap and connector are formed as a single unit to limit leaks and residue
- Five Flask Sizes – Fits 125 mL through 3L Erlenmeyer flasks
- Sterile, Single-Use – Individually packaged and ready for aseptic processing
Specifications
| Catalog Number | C30223-DZC150B |
| Brand | NEST Scientific |
| Description | Bi-Directional Transfer Cap for 3L Erlenmeyer Flask, TPE Tube 1/4" ID x 7/16" OD, Heat-Sealed End, Sterile |
| Sold As | Case of 4 (4 x 1) |
| Flask Size | 3L |
| Configuration | Cap Only (Flask Not Included) |
| Cap Type | Bi-Directional |
| Tubing Material | TPE |
| Tubing Length | 150 cm |
| Tubing ID x OD | 1/4" ID x 7/16" OD |
| Tubing Termination | Heat-Sealed End |
| Vent Filter | 0.22 µm, 13.8 cm² |
| Units per Pack | 1 |
| Units per Case | 4 |
| Vent Filter Rating | 0.22 µm |
| Flask Included | No |
Available Options
- C30821-EAC050B – Bi-Directional Transfer Cap for 125 mL Erlenmeyer Flask, Silicone Tube 1/8" ID x 1/4" OD, Male CPC, Sterile, Case of 4 (4 x 1)
- C30821-EFC050B – Bi-Directional Transfer Cap for 125 mL Erlenmeyer Flask, Silicone Tube 1/8" ID x 1/4" OD, Male Luer Lock, Case of 4 (4 x 1)
- C30921-EAC050B – Bi-Directional Transfer Cap for 250 mL Erlenmeyer Flask, Silicone Tube 1/8" ID x 1/4" OD, Male CPC, Sterile, Case of 4 (4 x 1)
- C30921-EFC050B – Bi-Directional Transfer Cap for 250 mL Erlenmeyer Flask, Silicone Tube 1/8" ID x 1/4" OD, Male Luer Lock, Case of 4 (4 x 1)
- C31021-EAC050B – Bi-Directional Transfer Cap for 500 mL Erlenmeyer Flask, Silicone Tube 1/8" ID x 1/4" OD, Male CPC, Sterile, Case of 4 (4 x 1)
- C31021-EFC050B – Bi-Directional Transfer Cap for 500 mL Erlenmeyer Flask, Silicone Tube 1/8" ID x 1/4" OD, Male Luer Lock, Case of 4 (4 x 1)
- C31121-AZC050B – Bi-Directional Transfer Cap for 1000 mL Erlenmeyer Flask, TPE Tube 1/8" ID x 1/4" OD, Heat-Sealed End, Sterile, Case of 4 (4 x 1)
- C31121-EAC050B – Bi-Directional Transfer Cap for 1000 mL Erlenmeyer Flask, Silicone Tube 1/8" ID x 1/4" OD, Male CPC, Sterile, Case of 4 (4 x 1)
- C31121-EFC050B – Bi-Directional Transfer Cap for 1000 mL Erlenmeyer Flask, Silicone Tube 1/8" ID x 1/4" OD, Male Luer Lock, Case of 4 (4 x 1)
Applications
- Closed media transfer to shake flasks
- Peristaltic pump filling and harvest
- Suspension cell culture feeding
- Bioreactor inoculum transfer
- Sterile tube welding workflows
