A pH electrode, also known as a pH probe or pH sensor, is the part of a pH meter that comes into contact with the substance being measured and is used to measure the electrode potential.

There are usually two methods for measuring the pH value of aqueous solutions: colorimetric method (pH test paper and colorimetric dish) and potentiometric method. The potential method can achieve continuous online measurement andpH electrodeThe only method for process monitoring, and the potentiometric method can obtain accurate and reproducible pH values, the core theory of pH electrode measurement is the Nernst equation.

The electrode used in potentiometric analysis is called a primary cell. A primary battery is a system that converts chemical reaction energy into electrical energy. The voltage of this battery is called electromotive force (EMF). This electromotive force (EMF) is composed of two and a half cells. One of the half cells is called the measuring electrode, and its potential is related to a specific ion activity; The other half cell is a reference half cell, commonly referred to as a reference electrode, which is typically connected to the measuring solution and to the measuring instrument. The most familiar and commonly used pH indicator electrode is the glass electrode.

　　purpose

Antimony electrode is a pH sensitive electrode, and due to its sturdiness, it is most suitable for use in situations where electrode sturdiness is required. However, it has significant limitations and should not be used for any tested components that have a substitution effect or form complexes and ions with antimony. Antimony electrode is suitable for pH testing in solutions containing hydrofluoric acid.

Technical Parameter

1. Measurement range: 0-14PH

2. Pressure range: 0-0.6MPa

3. Temperature range: 0-60 degrees (automatic temperature compensation)

4. Installation size: 3/4NPT thread

5. Material: Metal, PC shell

　　Usage, maintenance and precautions

• Keep the surface of the antimony electrode clean, and if necessary, polish the antimony surface with fine yarn paper.

• If the tested solution contains heavy metals or other ions that form metal coatings with antimony or have complexes and ions, it should not be used.