Mass Spectrometry Leak Testing for Consumer Containers
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Solution Overview
Problem
Current leak testing methods for closed containers filled with consumer products are limited in accuracy, particularly when the product is in a solid or liquid state, as they often rely on tracer gases or pressure differences, which may not effectively detect leaks in all cases, especially for containers with complex contents or varying states of matter.
Innovation Solution
A method and apparatus for leak testing using mass spectrometry, specifically quadrupole or SIFT-MS, to detect analytes dependent on the consumer product, which can be in any state, by analyzing the surrounding atmosphere for signs of leakage, and a system to control the testing process to prevent overloading the equipment with leaking containers, ensuring accurate detection without saturating the mass spectrometer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tracer gas technique is used to evaluate leakiness, then leak detection can be performed, but the method is not effective for containers with complex contents or varying states of matter and may produce false negatives
Solution Approach 1:
The invention changes the detection parameter from tracer gas concentration to mass spectral signature of product-specific analytes. By monitoring analytes that are inherently present in the consumer product (such as volatile organic compounds, decomposition products, or product-specific molecules), the system adapts to different product states (solid, liquid, gas) without requiring tracer gas introduction, thereby improving both reliability and versatility
Solution Approach 2:
The invention replaces the mechanical tracer gas introduction and sniffing system with a mass spectrometry-based detection system. Instead of introducing external tracer gases and detecting their presence, the system directly analyzes the atmospheric composition around the container for product-specific analytes, eliminating the need for tracer gases and improving adaptability to various product types
2Reliability
If pressure difference technique is applied for leak testing, then pressure equalization can indicate leaks, but the method lacks accuracy for containers with complex contents
Solution Approach 1:
The invention replaces pressure-based mechanical detection with mass spectrometry-based chemical analysis. Instead of measuring pressure changes that may be obscured by complex container contents or product states, the system directly detects the presence and concentration of product-specific analytes in the atmosphere around the container, achieving superior measurement precision across diverse product types
Solution Approach 2:
The invention introduces mass spectrometry as an intermediary detection mechanism between the container and the measurement system. The mass spectrometer acts as a sensitive mediator that can detect trace amounts of product-specific analytes in the atmospheric composition, providing high-precision leak detection without being affected by the physical state or complexity of the container contents
3Measurement precision
If mass spectrometry is used to detect analytes dependent on consumer product, then leak detection accuracy is enhanced, but the equipment may be overloaded by leaking containers
Solution Approach 1:
The invention performs preliminary evaluation of the container environment before full mass spectrometry analysis. The system first assesses the atmospheric composition and analyte concentrations to determine whether the container exhibits leak characteristics, and only then activates the full mass spectrometry detection sequence, preventing equipment overload from severely leaking containers while maintaining high detection accuracy for marginal cases
Solution Approach 2:
The invention implements dynamic control of the mass spectrometry system based on real-time conditions. The detection system adjusts its operation mode, sampling rate, and analysis depth according to the detected analyte levels and container leak characteristics, optimizing performance while preventing equipment overload through adaptive response to varying leak conditions
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
Enhances leak detection accuracy by identifying leaks in containers filled with products in various states, preventing false negatives and overloading, and ensuring only non-leaky containers are deemed suitable for storage or use.
Implementation Method 1
detecting at least one analyte by means of a mass spectroscopy technique
Implementation Method 2
mass spectrometry, specifically quadrupole or SIFT-MS
Implementation Method 3
quadrupole or SIFT-MS
Data Source
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AI summary
Close containers which are filled with a consumer product are tested on leakiness by means of mass spectrometry (10) in that an impact (AN(P)) by the consumer product (P) upon the surrounding atmosphere (A(P)) of the container to be leak tested is monitored by the mass spectrometry (10).