Product description
Sterile and aseptic connectors are used to join separate single-use fluid paths while maintaining the required process boundary in pharmaceutical and biotechnology applications.
Connection technologies are available for applications ranging from small-volume cell and gene therapy processes to production-scale transfer of buffers, media, intermediates and bulk pharmaceutical liquids.
Available configurations include small-bore and standard sterile connectors, genderless connector systems, male/female sterile connectors, high-flow connectors, sterile disconnect couplings and interfaces for connecting pre-sterilised single-use assemblies to steam-sterilised stainless-steel equipment.
Hose barb connections range from approximately 1/16" through 1 1/2", with sanitary Tri-Clamp interfaces available for suitable configurations.
Technical overview
A sterile connector allows two previously separated fluid paths to be joined without requiring open handling of the internal product-contact surfaces. Suitable designs use protective barriers that remain in position until the connector halves have been mechanically joined.
Different connector geometries are available according to tubing size, process volume, flow requirement, sterilisation strategy and whether the connection must subsequently be disconnected.
Genderless designs use identical mating halves, simplifying component selection within complex single-use assemblies. Male/female connector systems are also available where an established process already uses that connection architecture.
Operating principle
A sterile connection system typically consists of two protected connector halves. The connector halves are first mechanically joined while the sterile barriers continue to isolate the internal fluid path from the surrounding environment.
Once the mechanical connection has been secured, the protective barrier membranes are removed according to the connector-specific operating procedure. This opens a continuous fluid path between the two pre-sterilised systems.
This principle allows separately prepared bags, tubing assemblies, filters, bottles or other process systems to be connected during operation without requiring a tube welder for the connection.
Other connection technologies provide specific functions such as sterile disconnection or transition between a steam-sterilised stainless-steel system and a pre-sterilised single-use assembly.
Material options
Materials depend on the required connector function and sterilisation method.
Common connector materials include:
- Polycarbonate for many sterile and aseptic connector housings
- Platinum-cured silicone for suitable internal seals
- Polysulfone for higher-temperature and sterile-disconnect applications
- Application-specific polymer seals and internal valve components
Suitable connector families are available with USP Class VI and pharmaceutical material-conformity documentation. Exact conformity, animal-derived component statements and validation documentation depend on the selected connector family and configuration.
Available micron ratings
Not applicable. Sterile connectors and couplings are fluid-path connection components and do not contain filtration media.
If sterile filtration is required within the same process, a suitable capsule filter can be incorporated separately into the single-use assembly.
Design and construction
Small-bore sterile connectors
Small-bore genderless sterile connectors are available for low-volume fluid paths where conventional bioprocess connector dimensions would be unnecessarily large.
Standard hose barb sizes include:
- 1/16"
- 3/32"
- 1/8"
These configurations are suitable for tubing with internal diameters from approximately 1.6 mm to 3.2 mm and are particularly relevant to small-volume bioprocess, cell and gene therapy and sampling applications.
Standard genderless sterile connectors
Genderless sterile connectors provide identical mating interfaces on both sides of the connection. This eliminates the need to manage separate male and female connector halves within the same connector family.
Standard connection sizes can include:
- 1/8" hose barb
- 1/4" hose barb
- 3/8" hose barb
- 1/2" hose barb
- 3/4" hose barb
- 1" hose barb
- 3/4" Tri-Clamp
- 1 1/2" Tri-Clamp
This provides a scalable connection concept from relatively small tubing assemblies through production-scale transfer systems.
Male / female sterile connectors
Male/female sterile connection systems are also available for processes where this connection architecture is already established.
Common process interfaces include 3/8" and 1/2" hose barbs together with sanitary Tri-Clamp configurations.
Standard and higher-temperature versions can be selected according to the required sterilisation method.
High-flow sterile connectors
High-flow genderless connectors provide a larger internal flow path for production-scale transfer applications where reducing connection restriction is important.
Available high-flow process connections include:
- 1" hose barb
- 1 1/4" hose barb
- 1 1/2" hose barb
- 1 1/2" Tri-Clamp
These connectors are suitable for high-volume buffer, media, intermediate and bulk-product transfer applications.
Sterile disconnect couplings
Sterile disconnect couplings provide controlled separation of a fluid path after processing.
Internal valves automatically close the fluid path when the coupling halves are separated, helping reduce product leakage and protecting the disconnected system from external contamination.
Standard hose barb configurations include:
- 1/4"
- 3/8"
- 1/2"
Valved female and male couplings are available, together with suitable non-valved configurations, caps and closure plugs.
Suitable sterile disconnect configurations are rated from vacuum up to approximately 8.6 bar. The complete tubing assembly must also be suitable for the required process pressure.
Steam-to-single-use connections
Steam-compatible transition connectors provide an interface between steam-sterilised stainless-steel process equipment and a pre-sterilised single-use assembly.
The connector incorporates separate interfaces for the stainless-steel process system, steam exhaust and the downstream single-use fluid path.
During the SIP cycle, the stainless-steel equipment and connection interface are exposed to steam while the pre-sterilised single-use side remains isolated. After the sterilisation cycle, the connector is activated to open the sterile product path into the single-use assembly.
Standard connection combinations include:
- 3/4" sanitary process connections
- 1 1/2" sanitary process connections
- 3/8" hose barb to the single-use fluid path
- 1/2" hose barb to the single-use fluid path
- 3/4" Tri-Clamp single-use-side configurations
Quick-disconnect couplings
Quick-disconnect couplings can also be incorporated into single-use fluid paths where rapid mechanical connection and disconnection is required but creation of a new sterile connection in a non-sterile environment is not required.
Standard tubing interfaces cover approximately:
- 1/8" hose barb
- 1/4" hose barb
- 3/8" hose barb
- 1/2" hose barb
Polycarbonate configurations are suitable for many gamma-sterilised single-use systems, while polysulfone configurations provide additional temperature capability for suitable autoclave processes.
A standard quick coupling should not be treated as equivalent to an aseptic connector where a sterile connection must be established in an uncontrolled environment.
Sterilisation compatibility
Sterilisation capability depends on the selected connector family.
Suitable sterile connector configurations are available for:
- Gamma irradiation up to approximately 50 kGy
- Autoclave processing with suitable high-temperature configurations
- Steam-in-place connection to stainless-steel equipment
- Pre-sterilised ready-to-use single-use assemblies
Certain polycarbonate sterile connector configurations can be autoclaved up to approximately 130°C for 60 minutes. Suitable sterile disconnect configurations can withstand approximately 132°C for 60 minutes.
Sterilisation limits must always be confirmed for the selected connector and complete single-use assembly rather than applied universally to all connection technologies.
Single-use assembly integration
Sterile connectors can be incorporated directly into:
- Single-use tubing assemblies
- Bioprocess bag assemblies
- Bottle assemblies
- Sampling assemblies
- Filtration assemblies
- PUPSIT assemblies
- Filling assemblies
- Bioreactor fluid paths
- Media and buffer transfer sets
- Custom manifolds
Connector selection can therefore be considered as part of the complete fluid-path design rather than as an isolated component.
Production and documentation
Suitable sterile connector families are available from controlled ISO Class 7 cleanroom production and packaging environments.
Depending on the selected connector family, available documentation can include:
- USP Class VI material conformity
- FDA-related material conformity information
- BSE / TSE statements
- Animal-derived component-free statements
- Certificate of Conformance
- Validation documentation
- Extractables data where available
- Gamma sterilisation compatibility information
Exact documentation should be confirmed for the selected connector and final assembly configuration.
Typical applications
- Sterile fluid transfer
- Aseptic connection of independent single-use assemblies
- Bag-to-bag transfer
- Bag-to-vessel transfer
- Bottle and container connections
- Buffer and media transfer
- Cell-culture fluid paths
- Cell and gene therapy processing
- Sampling assemblies
- Sterile filtration systems
- PUPSIT assemblies
- Fill & Finish
- Bulk drug substance transfer
- Upstream processing
- Downstream processing
- Sterile disconnection
- Stainless-steel to single-use transfer
Key benefits
- Broad connection range: connection technologies cover fluid paths from approximately 1/16" small-bore tubing through 1 1/2" high-flow applications.
- Genderless options: identical mating halves simplify connector management within complex single-use systems.
- Small-volume configurations: dedicated connectors are available for low-volume tubing and cell and gene therapy applications.
- High-flow configurations: large-bore connectors support production-scale pharmaceutical liquid transfer.
- Sterile disconnect capability: valved coupling technology allows controlled separation of process lines.
- Hybrid process integration: steam-compatible connection technology enables transition between stainless-steel equipment and pre-sterilised single-use fluid paths.
- Multiple sterilisation strategies: suitable configurations are available for gamma irradiation, autoclaving and SIP-based processes.
- Assembly integration: connectors can be incorporated directly into ready-to-use tubing, bag, bottle, filtration and filling assemblies.
Configuration and quotation
Connector selection should begin with the required connection function, tubing size and sterilisation strategy.
For technical configuration and quotation, provide the following information where available:
- Sterile connection or sterile disconnection requirement
- Genderless or male/female connection preference
- Tubing material
- Tubing ID and OD
- Required hose barb or sanitary connection size
- Process fluid
- Expected flow rate
- Maximum operating pressure
- Operating temperature
- Gamma irradiation requirement
- Autoclave requirement
- SIP interface requirement
- Need for sterile disconnection after processing
- Integration into a tubing, bag, bottle or other assembly
- Required validation and conformity documentation
- Estimated annual quantity
If the exact connector technology has not yet been selected, the tubing dimensions, process function and sterilisation method normally provide enough information for an initial technical selection.