Product Description
Move media and cells in and out of the flask without ever opening it: each Erlenmeyer flask comes with a bi-directional transfer cap pre-installed, so filling, feeding and harvesting run through a closed line. That cuts the contamination risk that comes with every uncapping step.
This listing is for NEST catalog number C30921-AZC050A: 250 mL Erlenmeyer Flask, Bi-Directional Transfer Cap, 50 cm TPE Tube, 1/8" ID x 1/4" OD, Heat Sealed, Sterile, Case of 4 (4 x 1). The cap combines a 50 cm TPE tube (1/8" ID x 1/4" OD) with a heat-sealed end that supports aseptic tube welding, plus a 0.22 µm vent filter with 13.8 cm² of membrane area for oxygen supply without an external air filter. The one-piece cap and connector design reduces leak points and media residue. Assemblies are E-beam sterilized to SAL 10^-6, made under cGMP in an ISO 13485 facility and certified free of endotoxins and animal-origin components. LIGHT LABS stocks the NEST Scientific line and ships quickly from our Englewood, Colorado team.
Key Features
- Pre-Installed Transfer Cap – Flask and closed transfer line arrive as one sterile unit
- Bi-Directional Flow – Fill and drain through the same line with a peristaltic pump
- Heat-Sealed TPE Tubing – Weldable 1/8" ID x 1/4" OD tube for sterile connections
- Built-In Vent Filter – 0.22 µm, 13.8 cm² membrane supports gas exchange during culture
- One-Piece Construction – Fewer joints mean less leakage and residue
Specifications
| Catalog Number | C30921-AZC050A |
| Brand | NEST Scientific |
| Description | 250 mL Erlenmeyer Flask, Bi-Directional Transfer Cap, 50 cm TPE Tube, 1/8" ID x 1/4" OD, Heat Sealed, Sterile |
| Sold As | Case of 4 (4 x 1) |
| Flask Size | 250 mL |
| Units per Pack | 1 |
| Units per Case | 4 |
| Cap Type | Bi-directional transfer cap, pre-installed |
| Tubing | TPE, 50 cm, 1/8" ID x 1/4" OD |
| Tube End | Heat sealed |
| Vent Filter | 0.22 µm, 13.8 cm² |
| Sterilization | E-beam irradiation, SAL 10^-6 |
| Certified free of | Pyrogens/endotoxins, cytotoxins, DNase, RNase, DNA, BSE/TSE and animal-derived components |
| Manufacturing | cGMP facility, ISO 13485 and ISO 9001 certified; molded and packed in ISO 7 cleanroom |
Available Options
Applications
- Closed media filling and feeding
- Aseptic cell harvest
- Suspension cell culture for protein expression
- Seed train transfers between vessels
- GMP bioprocess development
