How do I properly maintain and clean the LabSen 211 Routine pH Electrode? (APERA INSTRUMENTS LabSen 211 Routine pH Electrode User Manual)

Answer

manuals.plus

Feb 23, 2025 - 10:42 PM

To properly maintain and clean the LabSen 211 Routine pH Electrode, follow these steps:

1. Connect the BNC plug to the input on the pH meter.
2. Before measuring, unscrew the sleeve cap, pull out the electrode, and rinse it with deionized or distilled water.
3. After use, put the electrode back into the bottle and xxxx the cap tight.
4. Prior to measurement, remove the rubber plug to maintain pressure of the reference solution, ensuring a consistent flow rate of the reference solution and stable potentials of the junction.
5. After a period of usage, the reference solution may run low. When the level falls to 1/2 height of the electrode, add 3M KCL solution to the refilling hole using a syringe or pipette.
6. Keep the connector of the electrode clean and dry. If it becomes contaminated, clean it with medical cotton and absolute alcohol, then blow dry to prevent short circuiting and slow reaction.
7. Soak the measuring tip of the electrode in the storage sleeve containing 3M KCL storage solution to keep the membrane hydrated and the junction unblocked. Clean the sleeve and replace the storage solution if it becomes turbid or mildewed. Do not soak the electrode in purified water or buffer solution for extended periods.
8. Avoid measuring dehydrated mediums such as strong acid or alkaline solutions, absolute ethyl alcohol, and concentrated sulfuric acid. If measuring such solutions is necessary, reduce the immersion time and clean the electrode carefully after use.
9. After 1 year of use, it is recommended to replace the electrode for optimum accuracy.

Please refer to the APERA INSTRUMENTS LabSen 211 Routine pH Electrode User Manual for more detailed instructions and information on usage and maintenance.