9
Care & Maintenance
10. CARE & MAINTENANCE
• Do not immerse the tester over the maximum immersion level.
• Fresh buffer should be used for each calibration. Once the sachets are opened the buffer value can change
over time.
• For improved accuracy a two-point calibration is recommended.
• If the electrode is slow or sluggish, soak it in cleaning solution for 20 minutes. Rinse with water and
hydrate the electrode in storage solution for a minimum of 30 minutes before calibrating.
• If measurements are taken successively, rinse the electrode thoroughly in distilled or deionized water to
eliminate cross-contamination between measurements.
• When not in use, remove the blade, add a few drops of storage solution to the protective cap to keep the glass
tip and the junction hydrated. If storage solution is not available, pH 4.01 or pH 7.01 buffer can be used.
Cleaning
• Remove the blade and o-ring, and clean with soapy water.
• Rinse with deionized water. Keep the o-ring with the blade after cleaning.
• Remove electrode’s outer junction sleeve and clean with purified water. Once cleaned a small amount
of supplied gel electrolyte should be added to refresh the junction and improve the pH measurement.
Note
: Never immerse the tester over the maximum immersion level.
Refilling the Electrode
• To remove the electrode sleeve, carefully rotate and slide it off (A).
Set aside.
Note
: Handle the probe with care, the pH electrode stem is made of glass.
• Rinse off any traces of electrolyte gel from sleeve. Soak the electrode tip in
HI700601
General purpose cleaning solution (or
HI700661
,
HI700663
,
HI700664
) for 20 minutes. Rinse with distilled or deionized water.
• Refill the reference well with
HI9071
Gelled bridge electrolyte (B).
• Replace the sleeve. Ensure the o-ring is fixed inside the electrode. Rinse off
excess gel with distilled or deionized water.
• Shake the probe down gently to eliminate any trapped air bubbles.
• Soak the electrode in
HI70300
Electrode storage solution for a minimum of 30 minutes before calibrating.
Storage
• To ensure a quick response, the glass tip and junction should be kept hydrated.
• When not in use, add a few drops of storage solution to the storage cap. If storage solution is not available,
pH 4.01 or pH 7.01 buffer can be used.
Note
: Do not store the electrode in distilled or deionized water.
Stainless steel blade
• When not in use, keep the
FC097
meat blade dry and clean (no grease or food particles) in the designated
box slot, with protective cap on, to avoid contamination. Keep the o-ring with the blade.
A
B
