pH Electrode Instructions for Use

Instructions for use of pH electrode Overview The pH compound electrode produced by our company with advanced foreign technology has superior performance and can be used in laboratories and various industrial occasions. The electrode can be used in conjunction with various acidity meters. The electrode has the following salient features: ● The electrode is easy to use, no need to replenish the electrolyte ● The measurement range of the electrode is 0~14pH, the temperature range is 0~110℃ ● The response time of the electrode is fast, the stability is good, and the anti-interference ability is strong ● The electrode is not easy to be damaged Pollution and clogging ● Long service life ● The electrode is suitable for use and maintenance in various occasions with low conductivity ● The electrode should be stored in a dry environment between 10°C and 30°C ● When the temperature is lower than -5°C, due to the If the liquid freezes, the electrode may break. Due to transportation reasons, when using the electrode, it must be observed whether the sensitive membrane bubble is filled with solution. Thermometer) to fill the membrane bubble with solution. Tighten the cap of the protective bottle to prevent the solution from seeping out. If there is too little or no liquid in the protective bottle, soak it for 24 hours before use, otherwise it will be difficult to calibrate, but do not soak in distilled water ● If the solution in the electrode protection bottle can submerge the bulb, it is not necessary to soak it before use. When used with a pH meter, a two-point calibration is required for the pH electrode, and a standard buffer solution (pH6.86, pH4.00 or pH9.18) should be used for calibration. The frequency of calibrating or checking the measuring electrode depends on different application conditions (The degree of dirt in the application, the deposition of chemical substances, etc.) Cleaning If the electrode bulb or diaphragm is blocked or polluted, the following reagents can be used to clean: ● Grease and oily substances, can be cleaned with surfactants ● Calcium precipitates and metal hydroxides It can be cleaned with 10% dilute hydrochloric acid ● Sulfide precipitation (such as in the process of sewage treatment) can be cleaned with a mixture of 10% dilute hydrochloric acid and saturated thiourea ● Protein deposits (such as in the food industry) can be cleaned with 10% dilute hydrochloric acid Cleaning with a mixture of hydrochloric acid saturated pepsin. When regenerating a slow-response pH electrode, it can be connected with a mixture of 10% HNO3 and NH4F (50g/1). The lead wire of the electrode is an imported pH special cable. The black semiconductor layer between them is completely removed. If the semiconductor layer is not removed, there will be a shunt phenomenon on the measuring electrode, so that there will be no slope or the slope will become smaller.