Selecting a peristaltic pump in biopharmaceutical processes requires comprehensive consideration of multiple factors, including fluid properties, system parameters, operating environment, control requirements, and validation requirements.
- The characteristics of the medium to be transported must be clearly defined, including chemical composition, pH value, solvent composition, viscosity, particle content, biological activity, and shear sensitivity. These factors determine the choice of pump tubing material. For example, silicone tubing is suitable for high transparency and high-temperature sterilization scenarios, TPV material has good chemical compatibility, while TPE material balances flexibility and corrosion resistance.
- Secondly, flow rate and pressure requirements must be considered. The required flow rate range and system back pressure must be determined based on the specific process stage. Some processes require extremely low flow rates (e.g., μL/min level) and necessitate the use of dedicated micro-flow peristaltic pumps; while large-volume material transfer requires high-throughput, high-pressure pumps. Filling applications place even higher demands on flow repeatability and dynamic response.
- Pump head structure design is also crucial. Common configurations include three-roller, six-roller, and multi-channel designs. More rollers result in less flow pulsation and higher filling accuracy; while multi-channel structures are suitable for multi-batch or parallel process requirements. Furthermore, the ease of pump head disassembly and assembly, as well as its sealing performance, also affect the equipment’s operating efficiency and maintenance frequency.
- Consideration should also be given to whether it meets CIP/SIP or single-use requirements. In small-batch or high-risk product production, disposable pump tubing assemblies can significantly reduce the risk of cross-contamination and validation burden, shorten batch changeover time, and improve flexibility.
- Regarding control methods, modern peristaltic pumps are often equipped with intelligent control systems that can communicate with host computer systems (such as DCS, SCADA, and PLC) to achieve batch recording, alarm linkage, parameter traceability, and other functions, facilitating the automation and digitalization of the pharmaceutical process.