Dimethyl sulfoxide (DMSO) plays an important role in cryopreservation, particularly in cell and gene therapy, stem cell processing, and other applications where maintaining cell viability during freezing is critical. While DMSO is an effective cryoprotectant, it is also a powerful solvent that can interact with materials commonly used in single-use processing systems.

For laboratories and manufacturers, understanding material compatibility is an important part of designing a reliable cryopreservation workflow. Bags, tubing, connectors, syringes, and other accessories may all come into contact with DMSO at different points in the process. Selecting the right materials requires consideration of not only the accessory itself, but also factors such as DMSO concentration, contact time, temperature, and how the component is used within the fluid path.

Why DMSO Resistance Matters

Not all plastics respond to DMSO in the same way. Depending on the material and exposure conditions, DMSO contact can potentially cause changes such as cracking, swelling, softening, or other physical changes that may affect the performance of an accessory.

These changes can have implications for the integrity of containers and connections, fluid transfer, sterility assurance, and overall manufacturing consistency. For this reason, material compatibility should be considered as part of the broader process design and validation strategy whenever DMSO is introduced into a fluid path.

Understanding the DMSO Fluid Path

DMSO can come into contact with multiple components as it moves from its original container, through formulation and transfer steps, and ultimately into a cryopreservation container. Depending on the workflow, these contact points may include vial-access devices, syringes, tubing, connectors, valves, manifolds, sampling devices, and cryopreservation bags.

For example, a workflow may begin with an accessory used to access and transfer DMSO from its source. DMSO may then pass through tubing or connectors as it is mixed with the cell product. Once formulated, the solution may travel through additional components before being transferred into a cryopreservation bag. Some processes may also include additional accessories for sampling or distributing the final product among multiple containers.

Each point along the fluid path should be considered individually. An accessory that is suitable for contact with diluted DMSO may not necessarily be appropriate for exposure to more concentrated DMSO earlier in the process. Understanding where and how DMSO contacts each component can help identify potential material-compatibility considerations before they become a concern during manufacturing.

Selecting Accessories for DMSO-Containing Workflows

Selecting accessories for a DMSO-containing process starts with understanding the specific conditions under which each component will be used. Important considerations can include the material of construction, DMSO concentration, duration of contact, temperature, mechanical stress, and the accessory’s role within the fluid path.

OriGen Biomedical offers selected products and accessories designed for use in cryopreservation workflows involving DMSO, including options for accessing process solutions, making fluid connections, transferring formulated cell products, and filling cryopreservation bags.

However, DMSO resistance should not be assumed for every accessory or every configuration. Suitability depends on factors such as:

• The material of construction
• DMSO concentration
• Contact time
• Temperature
• Mechanical stress
• The role of the accessory within the fluid path

OriGen Biomedical maintains detailed information identifying which accessories are designed for DMSO exposure and the applicable conditions. Because product configurations and customer processes vary, customers should contact OriGen for guidance rather than relying on a general assumption that an entire accessory set is DMSO-resistant.

Designing a More Reliable Workflow

A well-designed process limits unnecessary exposure and places compatible materials at each stage of the DMSO fluid path. Process-development teams should begin by mapping every accessory that may contact DMSO, from the original container through final product transfer.

For each component, consider questions such as:

• What material will come into contact with the solution?
• Will the accessory encounter concentrated or diluted DMSO?
• How long will the accessory be exposed?
• At what temperature will contact occur?
• Will the accessory experience bending, clamping, pressure, or other mechanical stress?
• Does the proposed use align with current product documentation?

These considerations can be incorporated into process-development and validation activities to help ensure that materials are appropriate for their intended use. OriGen Biomedical® product information can help support this assessment, while the complete manufacturing process should be evaluated and validated under the conditions in which it will actually be performed.

How OriGen Biomedical Supports DMSO Workflows

OriGen Biomedical supports cell processing and cryopreservation workflows with bags, solutions, and fluid-transfer accessories designed for use across different stages of the process. Understanding that material compatibility is an important consideration, our team can help identify product documentation and compatibility information relevant to a proposed application.

Depending on the needs of the process, this may include reviewing the intended fluid path, identifying accessories designed for DMSO exposure, providing applicable technical documentation, discussing connection and transfer options, and helping distinguish product-specific information from process-specific validation requirements.

Not every accessory is designed for the same type or duration of DMSO exposure. Engaging with OriGen early in process development can help teams identify appropriate components and determine where additional evaluation or validation may be needed.

Conclusion

DMSO is an important component of many cryopreservation workflows, but its solvent properties make material selection an important consideration in the design of the fluid path. Evaluating each component based on its material, DMSO exposure, and intended use can help support reliable fluid transfer and maintain the integrity of the overall process.

If your workflow includes DMSO, OriGen Biomedical can provide information about products and accessories designed for DMSO-containing applications and help identify the technical documentation relevant to your process.

Customers can access product instructions, technical resources, and supporting documentation through the OriGen Biomedical Client Dashboard.

Technical references available include the Accessory Set and CryoPur® Cryopreservation Solutions Instructions for Use, available through the OriGen Biomedical IFU page, as well as the DMSO Compatibility with Medical Plastics White Paper, available on the client dashboard or upon request through OriGen Biomedical.

About the Author

Antonio Domino, MSHGG

Clinical Specialist

Antonio has a Master’s in Human Genetics and Genomics from SCUHS and specializes in translating complex scientific concepts into practical clinical applications. With experience in bioinformatics, cGMP manufacturing, gene-modified cell therapies, and regulatory-aligned workflows, he works closely with clinical and cross-functional teams to support innovative therapies, regulatory excellence, and patient-focused outcomes that advance the future of precision medicine.

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