What is the slope range of the pH Meter after calibrating?
PH meter|Acidity meter is a commonly used instrument and equipment. Acidity meter, referred to as pH meter, consists of two parts: electrode and electric meter. It is mainly used to measure the pH value of liquid media. With the corresponding electrode, it can measure the potential MV value. It is widely used in industry, agriculture, scientific research, environmental protection and other fields. During use, if the electrodes can be properly maintained, standard buffers prepared as required and the correct Operating the electric meter can greatly reduce the pH indication error, thereby improving the reliability of chemical experiments and medical inspection data.
The slope range of the pH meter after calibration is above 95%. After the electrode has been used for a long time, the slope of the electrode after calibration should be at least above 85%.
The calculation of the slope is related to the electrode measuring the potential of the solution you prepare.
pH measurement only indicates the pH difference between the standard solution and the unknown solution. During actual measurement, it needs to be calibrated regularly with a standard buffer solution. Therefore, in order to achieve consistent values, a pH scale must be established. The pH scale range is set as 0~14pH, and the value of the pH scale is determined by the pHs value of the reference buffer solution.
How to clean pH meter electrodes
pH meter electrodes are extremely delicate, so removing dirt stuck to the pH meter electrodes requires care and the use of appropriate safety devices during the cleaning process. An appropriate cleaning solution needs to be selected. When cleaning the pH meter electrode, immerse the pH meter electrode in the cleaning solution for at least 5 minutes so that the cleaning medium can penetrate into the dirt and fully dissolve it. Generally, cleaning twice will give better results. First, soak the pH meter electrode in an acid or alkali solution. During the soaking process, use a soft toothbrush to remove dirt, and then choose a solvent to clean. Finally, rinse the pH meter electrode and soak it in clean water or salt solution (KCl). Maintain its active sensitivity and extend the service life of the pH meter electrode.
