Aquasafe WSL50 Pro, Инструкция по эксплуатации

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11.1 pH Electrode Care and Maintenance
The pH electrode is especially susceptible to dirt and contamination. Regular
cleaning is necessary depending on the extent and condition of use.
AFTER MEASURING:
Rinse the pH electrode in distilled water, and store the electrode in a suitable
electrode storage solution.
CLEANING THE ELECTRODE:

Salt deposits: Soak the electrode in warm tap water to dissolve deposits,
then thoroughly rinse with distilled water.

Oil or Grease film: Wash the electrode bulb gently in some detergents
and water. If necessary, use isopropyl alcohol to clean the electrode bulb,
then rinse with distilled water. Place the sensor in the electrode storage
solution for 30 minutes.

Clogged reference junction: Heat a diluted KCl solution to 60
o
C to 80
o
C.
Place the tip of the electrode into the heated solution for about 10
minutes. Allow the electrode to cool in some room temperature KCl
solution.

Protein deposits: Prepare a 1% pepsin solution in 0.1M of HCL. Place the
electrode in the solution for 10 minutes. Rinse the sensor with distilled
water.
REACTIVATING THE ELECTRODE:

If stored and cleaned properly, the electrode should be ready for
immediate use. However, a dehydrated bulb may cause sluggish
response. To rehydrate the bulb, immerse the electrode in a pH 4.01
buffer solution for 10 to 30 minutes. If this fails, the electrode requires
activation.

Soak the pH electrode in 0.1M HCl for 5 minutes.

Remove and rinse with deionised water, then place in 0.1M NaOH for 5
minutes.

Remove and rinse again, and soak in electrode storage solution for 30
minutes.