Portable copper sulfate reference electrode upgrade

Portable copper sulfate reference electrode upgrade

An electrode used as a reference for measuring the potential of various electrodes. The electrode to be measured and the reference electrode to which the exact value of the electrode potential is known are formed into a cell, and the electromotive force of the cell is measured, then the electrode potential of the measured electrode can be calculated. The electrode reaction on the reference electrode must be a single reversible reaction with stable electrode potential and good reproducibility. Generally, a slightly dissolved salt electrode is used as a reference electrode. Hydrogen electrode is an ideal but difficult reference electrode. An electrode for reference comparison when measuring electrode potential. Strictly speaking, a standard hydrogen electrode is an ideal electrode, but it is not actually possible.

Portable copper sulfate reference electrode upgrade

In actual electrode potential measurement, the electrode whose electrode potential has been accurately known and very stable is always used as the comparison electrode. By measuring the electromotive force of the cell composed of the electrode and the electrode to be measured, the electrode potential of the electrode to be measured can be calculated.

Portable copper sulfate reference electrode upgrade

The electrode reaction on the reference electrode must be a single reversible reaction with high exchange current density, convenient fabrication, good reproducibility and stable electrode potential. Generally, refractory salt electrode is used as the reference electrode. The reference electrode should not be prone to polarization; If once the current is too large, the polarization, the power after the electrode potential should be able to quickly restore the original value; When the temperature changes, the electrode potential hysteresis change should be small.

Portable copper sulfate reference electrode upgrade

When the pipe metal is in an electrolyte, then the pipe potential is not stable. A reference electrode is a semi-cell which has a stable and reversible electrochemical characteristic due to a single, reversible reaction. The stability of the reference electrode makes it very useful as an electrical reference point or for measuring the potential of other metals located in soil or water. When the reference electrode passes through other metal connections in the voltmeter in soil or water, the reference electrode becomes a semi-corrosive cell. Reference electrodes used to measure the potential of buried or underwater pipes usually have a potential value that is more correct than that of steel.

The reference electrode has large contact area and stable potential performance. The cable and the reference electrode can be used separately. The cable can be reused and replaced at will.