Monolithic Ceramic Frit for High-Pressure HPLC Filtration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional filter elements in high-performance liquid chromatography (HPLC) systems are not robust enough to withstand high pressures and often contain metal materials that can corrode or interact with biological samples, leading to contamination and inaccurate sample separation.
Innovation Solution
A ceramic frit made of one piece, comprising a solid holding unit and a porous filter unit, which are monolithically formed from the same ceramic material, providing mechanical robustness and bioinertness to filter out solid particles while withstanding high pressures without corroding or interacting with samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal frits are used for filtering fluid in HPLC systems, then filtering function is achieved, but corrosion and interaction with biological samples occur leading to contamination
Solution Approach 1:
The patent changes the material parameter from metal to ceramic, fundamentally altering the chemical properties of the frit. This material substitution eliminates corrosion and chemical interactions with biological samples while maintaining the filtering function, directly resolving the contradiction between reliability and sample contamination
Solution Approach 2:
The patent employs ceramic materials with specific compositional characteristics to create a frit that combines filtering capability with chemical inertness. The ceramic composition provides both the mechanical structure for filtration and the chemical stability required to prevent sample contamination
2Stress or pressure
If conventional filter elements are used in HPLC systems, then filtering is provided, but they are not robust enough to withstand high pressures
Solution Approach 1:
The patent changes the mechanical strength parameter of the frit by using ceramic material instead of conventional materials. This parameter change enables the frit to withstand the high pressures (up to 2000 bar) typical in HPLC systems while maintaining structural integrity and filtering function
Solution Approach 2:
The patent utilizes porous ceramic material structure to achieve both pressure resistance and filtering function. The porous structure provides the necessary mechanical robustness to withstand high pressures while simultaneously enabling the filtration of solid particles from the fluid
3Ease of manufacture
If frits are made of multiple pieces, then manufacturing is simplified, but assembly complexity and potential leakage points increase
Solution Approach 1:
The patent merges the holding unit and filter unit into a single monolithic ceramic piece. This merging eliminates the need for separate components and their associated assembly steps, reducing assembly complexity and potential leakage points while maintaining manufacturing feasibility through direct ceramic forming processes
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 ceramic frit effectively filters solid particles and prevents contamination in HPLC systems, ensuring accurate sample separation and longevity by being resistant to high pressures and chemically aggressive solvents, while being easy to manufacture and handle.
Implementation Method 1
a filter unit made of ceramic which is held by the holding unit for filtering a fluid
Data Source
AI summary
A frit for a sample separation device for separating a fluidic sample includes a holding unit made of ceramic and a filter unit made of ceramic, which is held by the holding unit for filtering a fluid. The holding unit and the filter unit are formed as one piece.