FANGZHOU FZ-821 Lead-free Glass PH electrode for protein samples

The difficulty in testing viscous and dairy samples lies in the blockage of the junction. The former is because the sample is very viscous and hinders the seepage of the reference solution, and the latter is because the protein in the sample reacts with the reference solution to block the junction.

Viscous and dairy products measurement pH electrode series model function

Application Requirements for Viscosity and Dairy Measurements: Prepressurized Reference System, Protelytle Reference Electrolyte

Pre-pressurized reference system

There are many viscosity test samples, such as creams, lotions, hair dyes, etc. in the cosmetic industry, jams and creams in the food industry, coatings, glues, paints, and resins in the chemical industry, etc. It is often difficult to test viscous samples with conventional pH electrodes, and the response is slow. Unstable readings, poor repeatability and other issues. Because the viscous sample will block the ceramic core and prevent the reference solution from seeping out. Another situation is the test under high temperature and high pressure, and the sample solution reversely penetrates into the electrode. The pre-pressurization electrode can effectively solve the above problems. Pre-pressurization is a special electrode processing technology, which is to pre-fill a certain pressure inside the electrode to ensure that the electrolyte can slowly flow from the junction even in a very viscous solution. Exudation can also prevent the sample solution from entering the electrode, ensuring stable and repeatable testing. The figure below is a schematic diagram of the pre-pressurized electrode, and the pressure indicator tube in the figure is used to control the pressure.

dairy testing

When using a conventional pH electrode to test protein-containing dairy products and foods, the protein in the sample will react with the KCI reference solution, precipitate and block the ceramic junction.

Protelyte is an oily electrolyte that will not react with protein, and the junction of the FZ-821/823 electrode has 3 ceramic cores, which is less likely to be blocked.

Viscous and dairy product measurement pH electrode series model parameter table

Electrode X1

[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.