pH meter electrode poisoning causes
refers to the flow type The creation of electrical channels in a pH meter electrode is dependent on the electrolyte's internal micro-osmotic pressure, which allows it to permeate the measuring solution. When the medium has a high pressure or concentration, the fluid replacement route is not smooth, there are air bubbles, etc., this may prevent the electrolyte from leaking and raise the electrical path's intermediate impedance. The salt bridge or even the pH meter electrode will become contaminated if the liquid reverses into it. It could lead to an electrolyte or internal electrode poisoning chemical reaction (e.g., AgCl sulfide to Ag2S).
The loss of alkaline materials (mostly monovalent cations) in a sensitive glass membrane in a strongly oxidizing media can harm the hydration layer and poison the electrode of the pH meter. You can choose a pH meter electrode that can withstand acid. The manufacturing method's use of unique process controls (a special added ion formula) has improved the glass film's ability to withstand acidosis. The linearity is fixed.
Outside of pH2pH9, the pH meter electrode does not have a good linear relationship, and it is simple for a significant number of hydronium ions—H3O—to develop in a very acidic solution. As a result, the number of H on the pH meter electrode's surface falls substantially and the pH value rises. The exchange mechanism between the hydrogen in the solution and the hydrogen on the electrode hydration layer will also involve Na in the strongly alkaline medium, increasing the electrode potential of the pH meter and lowering the pH level.
