High-Performance Single-Use Bags for Critical Bioprocessing- EZBio® Ultra Bag Assembly
The EZBio® Ultra Bag Assembly is a high-performance single-use solution developed for reliable fluid storage and transfer in demanding bioprocessing workflows. Designed to support consistency, sterility, and throughput, these bag assemblies are engineered to minimize hold-up volume while maintaining strong mechanical integrity and predictable flow behavior.
Built for both upstream and downstream applications, EZBio® Ultra Bags provide a dependable option for handling buffers, media, and process fluids where contamination control and material performance are essential.

The EZBio® Ultra Bag Assembly is a made-to-order single-use bag system constructed from medical-grade Renolit 9101 multilayer polyethylene film. This film offers high clarity, excellent strength, and low permeability to oxygen and carbon dioxide, supporting stable storage and transfer of sensitive bioprocess fluids.
Each bag features ports engineered for enhanced edge-seal integrity, improving flow performance while reducing fluid hold-up. This design enables consistent and repeatable transfer, especially in high-throughput operations where product recovery is critical.
EZBio® Ultra Bags are supplied as fully assembled, double-bagged, and gamma-sterilized systems. Customers can select tubing brands and fitting configurations from Foxx Life Sciences’ standard options, ensuring compatibility with existing processes. Assemblies are manufactured in the United States and typically delivered within four to six weeks.
Key Features and Benefits
Renolit 9101 multilayer polyethylene film
Provides high clarity, low water vapor and gas transmission, and excellent mechanical strength.
Optimized port design
Enhances edge-seal integrity and supports improved flow rates during filling and transfer.
Wide volume range
Standard sizes available from 50 mL to 50 L, with customizable options extending up to 200 L.
Low-profile bag geometry
Reduces product hold-up and maximizes recovery of valuable process fluids.
Multiple port configurations
Supports a variety of bioprocessing applications, from storage to sampling.
Made-to-order flexibility
Assemblies can be customized with selected tubing brands and fittings to match process requirements.
Sterile and ready to use
Double-bagged and gamma-sterilized to reduce contamination risk and eliminate in-house assembly steps.
Applications
The EZBio® Ultra Bag Assembly is suitable for a broad range of bioprocessing operations, including:
Buffer and cell culture media storage
Bulk product collection and transport
Chromatography and filtration buffer management
Fraction collection
Product sampling
Its material performance and configurable design make it well suited for both development and manufacturing environments.
Designed for Control, Flexibility, and Recovery
With its robust film construction, optimized port sealing, and made-to-order flexibility, the EZBio® Ultra Bag Assembly supports clean, efficient, and repeatable fluid handling. It provides a practical alternative to rigid containers while maintaining the performance characteristics required in regulated bioprocessing settings.
Explore specifications, available configurations, and request a quote for the EZBio® Ultra Bag Assembly here: