Sample Diluting Device Using Mass-Based Concentration Control
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Solution Overview
Problem
Current methods for preparing samples for ICP-AES analysis face challenges in accurately adjusting sample concentration due to temperature-dependent volume changes and require manual, separate processes for dilution and dispensing, leading to inconsistencies and inefficiencies.
Innovation Solution
A sample diluting and dispensing device that automatically adjusts sample concentration based on mass using a scale to control the operation of a sample holding plate, sample supply unit, and diluent supply unit, ensuring precise weight measurements for multiple samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If volume-based dilution is performed manually using pipette or syringe, then the operation is simple and equipment is minimal, but the concentration adjustment accuracy deteriorates due to temperature-dependent volume changes
Solution Approach 1:
The patent changes the measurement parameter from volume to mass. By using a scale to measure the mass of samples and diluents instead of measuring volumes with pipettes or syringes, the system eliminates temperature-dependent volume expansion/contraction errors. The controller calculates concentrations based on mass measurements, providing accurate concentration adjustment regardless of temperature variations.
2Productivity
If manual separate operations are performed for dilution and dispensing, then the device complexity is low, but the analysis speed and productivity deteriorate
Solution Approach 1:
The patent combines the dilution function and dispensing function into a single automated device. The sample supply unit and diluent supply unit work together under controller coordination to simultaneously perform dilution and dispensing operations. This integration eliminates the need for separate manual operations, significantly improving sample analysis speed and productivity.
Solution Approach 2:
The automated device performs dilution and dispensing operations autonomously without manual intervention. The controller automatically controls the sample supply unit, diluent supply unit, and holding plate based on pre-programmed parameters, enabling the system to serve itself and eliminating the need for operators to perform repetitive manual tasks.
3Loss of time
If multiple sample vessels are processed manually, then the equipment is simple, but the time consumption and operational efficiency worsen
Solution Approach 1:
The patent divides the sample processing into multiple segments by providing a holding plate with multiple holding positions. Each position can accommodate a sample vessel, allowing parallel processing of multiple samples. The automated system sequentially or simultaneously handles each vessel, reducing total preparation time compared to processing one sample at a time manually.
Solution Approach 2:
The automated device maintains continuous operation by seamlessly transitioning between processing different sample vessels. The controller coordinates the sample supply unit, diluent supply unit, and holding plate to ensure uninterrupted processing, eliminating idle time between samples and maximizing productive action throughout the preparation process.
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 device ensures accurate and consistent sample preparation by automating the dilution and dispensing process based on weight, improving the efficiency and speed of sample analysis for ICP-AES by eliminating manual volume-based methods.
Implementation Method 1
a scale installed below the sample holding plate to measure a weight of the sample vessel
Data Source
AI summary
The present invention relates to a sample diluting and dispensing device. The sample diluting and dispensing device according to the present invention includes: a sample holding plate in which a holding part for holding a plurality of sample vessels is formed; a moving unit for transferring the sample holding plate in a plane direction and a height direction; a sample supply unit for supplying a sample to the sample vessel; a diluent supply unit for supplying a diluent to the sample vessel; a scale installed below the sample holding plate to measure a weight of the sample vessel; and a controller for receiving a weight measurement result from the scale and controlling an operation of each of the sample holding plate, the sample supply unit, and the diluent supply unit.