Inline Buffer Dilution Manifold for On-Demand Bioprocessing
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Solution Overview
Problem
Conventional buffer management systems in bioprocessing require large quantities of full-strength buffer solutions, leading to substantial footprints and logistical challenges due to the need for specialized equipment, and lack efficient management of variable demand for multiple buffer solutions.
Innovation Solution
A buffer management system incorporating a single-use manifold with a dilution skid that selectively mixes concentrated buffer solutions with water for injection (WFI) to create diluted buffer solutions within predetermined tolerance ranges, using pumps and sensors to achieve the desired buffer characteristics, and a control unit to automate the process, allowing for compact storage and on-demand production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If large quantities of full-strength buffer solutions are produced and stored in totes, then the buffer supply requirement is met, but the storage footprint and logistical complexity increase substantially
Solution Approach 1:
The buffer solution is segmented into concentrated buffer (small volume) and diluent (large volume), allowing the system to store only the essential concentrated form and generate diluted buffer on-demand, thereby reducing storage footprint while meeting quantity requirements
Solution Approach 2:
The concentrated buffer is prepared in advance and stored in compact form, with the dilution capability built into the system. This preliminary concentration allows the system to generate large quantities of diluted buffer only when needed, eliminating the need to pre-store large volumes
2Adaptability or versatility
If multiple buffer solutions are stored in large totes, then the variety of buffer types is available, but the storage space and handling requirements increase
Solution Approach 1:
The dilution system serves as a universal platform that can generate multiple different buffer types from a single concentrated buffer source by varying dilution ratios and adding different additives, eliminating the need for separate storage totes for each buffer type
Solution Approach 2:
The system achieves buffer variety by changing parameters such as dilution concentration, pH, and additive composition rather than storing physically different solutions, allowing one concentrated buffer to generate multiple operational buffer types
3Productivity
If concentrated buffer and diluent are mixed inline, then on-demand buffer production is achieved, but the mixing precision and buffer characteristic control must be maintained
Solution Approach 1:
The system incorporates sensors that continuously monitor buffer characteristics (pH, conductivity, etc.) during the mixing process and provide feedback to the control system, which automatically adjusts pump speeds and mixing parameters to maintain precise buffer specifications despite varying production rates
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system reduces storage space requirements, enhances buffer solution management, and enables on-demand production of buffer solutions with precise characteristics, addressing the challenges of variable demand and logistical complexities in bioprocessing applications.
Implementation Method 1
The first pump component is configured to be operably arranged with a first pump motor to selectively generate a fluid displacement within the buffer inlet line
Implementation Method 2
The second pump component is configured to be operably arranged with a second pump motor to selectively generate a fluid displacement within the WFI inlet line
Implementation Method 3
The buffer characteristic sensor is configured to detect a value of a buffer characteristic of a fluid in the discharge line and to generate a buffer characteristic signal indicative of the sensed value for the buffer characteristic
Data Source
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AI summary
A buffer management system includes at least one workstation configured to support a supply of concentrated buffer solution and an inline dilution skid having a manifold. The manifold is in fluid communication with the supply of concentrated buffer solution and is adapted to be placed in fluid communication with a source of water for injection (WFI). The manifold includes a buffer inlet line in selective fluid communication with the supply of concentrated buffer solution, a WFI inlet line in selective fluid communication with the source of WFI, and a discharge line in fluid communication with both the buffer inlet line and the WFI inlet line. The inline dilution skid is configured to variably mix the supply of concentrated buffer solution and the source of WFI to obtain a range of diluted buffer solutions.