Reagent Preparing Apparatus pH Feedback Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional reagent preparing apparatuses face challenges in ensuring the reliability of analysis results due to errors caused by hydrogen ion concentration of diluted reagents falling outside a predetermined range, making it difficult to identify and prevent erroneous analysis results.
Innovation Solution
A reagent preparing apparatus that stops the supply of diluted reagent to the sample measuring section when the hydrogen ion concentration is outside a predetermined range, discards the diluted reagent, and allows for resumed supply upon correction, thereby preventing erroneous analysis results and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If diluted reagent is supplied continuously to the sample measuring section, then productivity is improved, but analysis reliability deteriorates when hydrogen ion concentration is outside the predetermined range
Solution Approach 1:
The system continuously monitors the hydrogen ion concentration of the diluted reagent and uses this feedback information to control the supply operation. When the concentration is within the predetermined range, supply continues; when outside the range, supply is automatically stopped, thus maintaining both productivity and reliability through real-time feedback control
Solution Approach 2:
The reagent supply system transitions from a static continuous supply mode to a dynamic controlled supply mode. The supply state (on/off) changes dynamically based on the real-time hydrogen ion concentration measurement, allowing the system to adapt to varying reagent quality conditions while maintaining overall productivity
2Productivity
If diluted reagent with unknown hydrogen ion concentration is used, then productivity is improved, but measurement precision deteriorates
Solution Approach 1:
The hydrogen ion concentration of the diluted reagent is measured in advance before it is supplied to the sample measuring section. This preliminary measurement allows the system to identify and exclude reagent batches with inappropriate concentration, ensuring that only reagent within the predetermined range is used for analysis, thus maintaining measurement precision without sacrificing productivity
3Reliability
If reagent supply is stopped to verify hydrogen ion concentration, then analysis reliability is improved, but productivity deteriorates
Solution Approach 1:
Instead of periodic manual verification, the system implements continuous automated monitoring of hydrogen ion concentration with real-time feedback control. The supply is stopped only when necessary (when concentration is outside the range) and automatically resumed when the concentration returns to the acceptable range, minimizing productivity loss while maintaining high reliability
Solution Approach 2:
The system performs self-verification of reagent quality through automated hydrogen ion concentration measurement and self-control of the supply operation. This eliminates the need for external manual intervention and minimizes disruption to the analysis workflow, maintaining both reliability and productivity
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 solution effectively prevents erroneous analysis results by ensuring the hydrogen ion concentration of the diluted reagent remains within a predetermined range, enhancing the reliability of analysis results and allowing for controlled reagent usage without waste.
Implementation Method 1
a pH measuring section for measuring hydrogen ion concentration of the diluted reagent
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A reagent preparing apparatus capable of being connected to a sample measuring section for measuring a sample using a diluted reagent prepared by the reagent preparing apparatus is disclosed. It comprises: a reagent preparing section for preparing a diluted reagent containing a predetermined reagent and pure water; a pH measuring section for measuring hydrogen ion concentration of the diluted reagent prepared by the reagent preparing section; and a controller for performing predetermined processing, wherein the controller is configured to change the process to be performed based on the hydrogen ion concentration measured by the pH measuring section. A sample analyzer is also disclosed.