Difference between acid meter and ph meter
Acidity meter and ph meter both are the same, is a kind of high-precision industrial online automatic continuous detection of acidity and alkalinity of the analytical instrument.
Acidity meter is abbreviated as pH meter, which consists of two parts: electrode and galvanometer, it is a commonly used instrument and equipment, which consists of three parts: reference electrode, glass electrode and galvanometer. It is widely used in industry, agriculture, scientific research, environmental protection and other fields.
Acidity meter is a commonly used instrument and equipment, also known as PH meter. It is mainly used to measure the acidity and alkalinity value of liquid medium, with the corresponding ion selective electrode can also measure the ion electrode potential MV value, BPH-200A series PH meter is widely used in industry, agriculture, scientific research, environmental protection and other fields. The instrument is also a food factory, drinking water factory QS, HACCP certification in the necessary inspection equipment.
Acidity meter is an instrument for determining the pH value of a solution. The main body of the acidimeter is a precision potentiometer. Determination of the composite electrode inserted in the measured solution, due to the acidity of the solution under test (hydrogen ion concentration) and produce different electric potential, it will be amplified through the DC amplifier, and finally by the readout indicator (voltmeter) pointed out that the pH value of the solution under test. The acidimeter can be used in the range of 0 to 14 pH.
Precautions for the use of ph meter
1,Generally, the instrument should be calibrated once a day when it is used continuously; generally, the instrument does not need to be calibrated again within 24 hours.
2, the use of the electrode before pulling down the upper end of the rubber sleeve so that it reveals the upper end of the small hole.
3, calibration of the buffer solution is generally used for the first time with pH = 6.86 solution, the second time with a buffer close to the pH value of the measured solution, such as the measured solution is acidic, the buffer should be selected pH = 4.00; such as the measured solution is alkaline, then select the buffer pH = 9.18.
4, measurement, the introduction of the electrode wire should be kept stationary, otherwise it will cause measurement instability. 5,Do not immerse the electrode in distilled water.
6,Keep the electrode bulb moist, if it is found to be dry, it should be soaked in 3mol/L potassium chloride solution or a slightly acidic solution for a few hours before use to reduce the asymmetric potential of the electrode.
