As cell therapy and advanced biologics continue to evolve, expectations around process consistency have increased dramatically. Every step in a workflow is being evaluated for reproducibility, scalability, and risk reduction — including thawing.
Yet many laboratories still rely on a process that has changed very little over time: the 37°C water bath.
For decades, water baths have provided a familiar and simple approach to cryovial thawing. However, growing demands around standardization and process control are causing many laboratories to question whether traditional methods remain the best option.
Why thawing deserves more attention
Thawing is often considered a brief process step, lasting only a few minutes. However, those minutes can influence downstream performance.
Cryopreserved samples often represent:
• Valuable patient material
• Cell therapy products
• Primary cells
• Stem cells
• Research samples
Small variations in handling can potentially affect:
- Cell viability
- Recovery rates
- Assay reproducibility
- Workflow consistency
Challenges associated with water bath workflows
1. Manual timing decisions
Traditional thawing commonly relies on operator judgement:
- When should the sample be removed?
- Has thawing completed?
- Is additional mixing required?
Different users may answer these questions differently.
2. Contamination considerations
Water-based environments require ongoing maintenance and cleaning procedures.
Organizations frequently consider:
- Water quality
- Cleaning schedules
- Cross-contamination concerns
- Environmental monitoring requirements
3. Reproducibility across teams
As laboratories scale operations, maintaining consistency across multiple users, shifts, and sites becomes increasingly important.
Reducing manual variation becomes a critical objective.
Moving toward standardized workflows
Many laboratories are exploring alternative approaches that reduce manual intervention while improving reproducibility.
Key considerations include:
✓ Automated workflows
✓ Defined process endpoints
✓ Reduced handling variability
✓ Water-free operation
Thawing may only represent a small part of the workflow, but small improvements can create meaningful operational benefits.
Download our guide: Cryovial Thawing Guide: Reducing Variability in Cell Workflows
