Integrated Electrode Rod with Capillaries for NMR pH Adjustment
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Solution Overview
Problem
The existing methods for adjusting the pH value of small liquid test samples in narrow containers are time-consuming and labor-intensive due to the need for frequent insertion and removal of laboratory equipment, such as electrode rods and pipettes, which complicates the preparation and titration process.
Innovation Solution
A method and device utilizing an electrode rod with integrated capillaries for acid, base, and gas, allowing for direct and continuous titration within the sample container while maintaining the electrode rod immersed, facilitating automated pH adjustment without the need for multiple equipment movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If iterative pH adjustment is performed using separate electrode rod and pipettes, then pH value can be adjusted, but the process becomes time-consuming and labor-intensive due to frequent insertion and removal of equipment
Solution Approach 1:
The patent combines the electrode rod and titration pipettes into a single integrated device. The electrode rod contains internal capillaries that allow acid and base solutions to be delivered directly through the rod itself, eliminating the need for separate pipettes. This merging of functions enables continuous titration without removing the device from the sample container, significantly reducing preparation time while maintaining pH adjustment capability.
Solution Approach 2:
The electrode rod is designed to perform multiple functions simultaneously: pH measurement and titration (acid/base delivery). The rod contains separate capillaries for acid and base solutions, allowing it to function as both a sensing device and a titration device. This multi-functionality eliminates the need for multiple separate instruments and reduces the number of equipment movements required during pH adjustment.
2Measurement precision
If multiple equipment movements are required for titration in narrow containers, then pH adjustment can be achieved, but the process becomes complex and contamination risks increase
Solution Approach 1:
By integrating the titration functionality into the electrode rod itself, the patent eliminates the need to move separate pipettes in and out of narrow sample containers. The combined device requires only a single insertion, simplifying the操作流程 and reducing contamination risks associated with multiple equipment movements.
3Measurement precision
If separate titration and measurement equipment is used, then pH adjustment can be performed, but automation becomes difficult due to multiple equipment movements
Solution Approach 1:
The integration of measurement and titration functions into a single device creates a unified system that is much easier to automate. The single-device architecture allows for straightforward programmable control where the system can automatically adjust pH by controlling the flow of acid or base through the internal capillaries, without the complexity of coordinating multiple separate instruments.
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
This approach simplifies and accelerates the pH adjustment process by allowing continuous titration and pH measurement without removing the electrode rod, reducing contamination risks and minimizing the number of equipment movements, thus enhancing efficiency and reducing preparation time for small test samples.
Implementation Method 1
the measuring end comprises a pH measuring element
Implementation Method 2
an acid capillary extending within the electrode rod for feeding an acidic fluid into the liquid sample, the acid capillary having an acid outlet opening in a bottom of the measuring end, a base capillary extending within the electrode rod for feeding a basic fluid into the liquid sample
Implementation Method 3
a gas capillary extending within the electrode rod for feeding a gas into the liquid sample, the gas capillary having a gas outlet opening in a bottom of the measuring end
Data Source
AI summary
A method and device have an electrode rod (1; 21) for a pH meter. The electrode rod (1; 21) has a measuring end (2; 22) for immersion into a liquid test sample (31), wherein the measuring end (2; 22) has a pH measuring element, and wherein electrical feed lines (5) in the electrode rod (1; 21) extend towards the pH measuring element. A plurality of capillaries (8, 9, 10; 23) for feeding liquids and gas into the test sample (31) extend in the electrode rod (1; 21) and have outlet openings (11, 12, 13; 24) in the area of the measuring end (2; 22). The method and device facilitate and accelerate preparation of liquid test samples and adjustment of a pH value for small amounts of test samples or narrow sample containers in NMR spectroscopy applications.