(...) “GOOD PRACTICE GUIDELINES: The following general guidelines indicate the care and maintenance required:

1. After Use - Rinse thoroughly with distilled water. Short Term Storage – Immerse in storage solution (025 192) Long Term Storage – Fit wetting cap filled with storage solution (025 192) and replace in original packaging;

2. Electrodes should be stored: a) away from direct sunlight, b) in a vertical position, c) within their specified temperature range;

3. Always ensure the electrode is used within its specified temperature range. Ageing of electrodes used above their specified temperature is rapid and irreversible;

4. DO NOT touch the sensitive glass pH membrane or reference junction. Excess droplets of solution may be removed by gently blotting with filter paper or tissue. DO NOT rub the electrode as this may induce an electrostatic charge;

5. During use ensure the electrode is rinsed between each measurement to eliminate the contamination of solutions”. (...)