Instrument Use
Electrolyte analyzer is indispensable in clinical testing. In clinical testing, it mainly tests and maintains human blood. The balance of osmotic pressure in body fluids, ion testing and detection are very important in patients who require large amounts of balanced fluids such as surgery, burns, diarrhea, and acute myocardial infarction.
The instrument has high precision and accuracy, and the result of any sample measurement is accurate, reliable, fast, and the operation is very simple. Therefore, ion detection is an indispensable general equipment in hospitals at all levels.
Working Principle
Electrolyte analyzers use ion selective electrode measurement to achieve accurate detection. There are six types of electrodes on the instrument: sodium, potassium, chloride, ionized calcium, lithium, and reference electrode. Each electrode has an ion selective membrane that will interact with the The corresponding ion in the test sample reacts. The membrane is an ion exchanger, and the membrane potential is changed by reacting with the ion charge. Then the potential between the liquid, the sample and the membrane can be detected. The difference between the two potentials detected on both sides of the membrane will produce Current, sample, reference electrode, and reference electrode solution constitute one side of the "loop", membrane, internal electrode solution, and internal electrode on the other side.
The difference in ion concentration between the internal electrode solution and the sample will generate an electrochemical voltage on both sides of the working electrode's membrane. The voltage is led to the amplifier through the highly conductive internal electrode, and the reference electrode is also led to the location of the amplifier. By detecting an accurate The standard solution with known ion concentration obtains a calibration curve to detect the ion concentration in the sample.
When the measured ions in the solution contact the electrode, ion migration occurs in the aqueous layer of the ion-selective electrode matrix. The charge of the migrated ions changes and there is a potential, which changes the potential between the membrane surfaces. Between the measuring electrode and the reference electrode Create a potential difference.
