Views: 0 Author: Site Editor Publish Time: 2026-04-28 Origin: Site
Insufficient or uneven electrolyte filling inside the electrode is the main cause of inaccurate data.
Our Probest ammonia-nitrogen electrodes are pre-filled with electrolyte before shipment. During transit, electrodes are often placed horizontally, causing the internal electrolyte to flow backward.
After customers receive the goods and place the electrode vertically, the electrolyte reflows again. This repeated flow creates empty spaces and trapped air bubbles inside the electrode.
Air bubbles directly interfere with ion induction at the membrane head, leading to drifting, unstable or falsely high readings.
Therefore, shaking the electrode properly after unboxing is a mandatory first step. Correct shaking helps recombine the electrolyte, push liquid toward the sensitive membrane head, expel trapped air bubbles, and ensure even electrolyte distribution.
Hold the electrode at a 135° downward angle and shake it firmly several times to discharge internal air bubbles. (Refer to the operation video for standard posture)
Perform a simple test with tap water: observe whether the electrode reading drops significantly.
If the reading falls to single digits, your water sample naturally has a high ammonia-nitrogen concentration, and the electrode is working normally.
If the tap water reading still remains above 1000 mg/L:
Unscrew the integrated black protective cover gently.
Inspect the electrode membrane head carefully. A white foggy appearance indicates trapped air bubbles inside.
Gently flick the electrode body to eliminate micro air bubbles and check if the reading returns to normal.
Remove the electrode and repeat the downward shaking operation for secondary exhaust.
If readings are still abnormal after all above operations, replace the Probest dedicated ammonia-nitrogen electrolyte to restore electrode performance. (Full electrolyte replacement operation shown in the video)