Manual d'usuari de l'elèctrode de pH WTW 103644 Model Sentix H

Introducció

The WTW Sentix H pH Electrode is specifically designed for challenging measurements, particularly in high alkaline solutions. This specialized electrode ensures accurate pH readings even in low-ion samples or when dealing with very small volumes. Its robust design and advanced features make it a reliable tool for various laboratory and industrial applications.

Figura 1: WTW Sentix H pH Electrode. This image displays the full length of the electrode, highlighting its slender body, the S7 plug head at the top, and the sensing bulb at the bottom. The blue labeling on the electrode body is also visible.

Configuració

Proper setup is crucial for optimal performance of your Sentix H pH Electrode. Follow these steps:

1. Desembalatge: Traieu amb cura l'elèctrode del seu embalatge. Inspeccioneu-lo per detectar qualsevol dany visible.
2. Storage Solution Removal: The electrode tip is typically protected by a cap containing a storage solution. Remove this cap. Do not discard the cap or solution, as it is needed for storage.
3. Esbandida: Rinse the electrode tip thoroughly with distilled or deionized water to remove any residual storage solution. Gently blot dry with a lint-free tissue.
4. Connecting to Meter: Connect the S7 plug head of the electrode to the corresponding S7 input port on your compatible pH meter. Ensure a secure connection.
5. Pre-conditioning (if necessary): For new electrodes or those that have been stored dry, immerse the electrode tip in a suitable electrode storage solution or pH 7 buffer for at least 30 minutes to an hour before first use.

Instruccions de funcionament

The Sentix H electrode is optimized for high alkaline solutions. Adhere to the following operational guidelines:

• Calibració: Always calibrate the electrode with fresh pH buffer solutions (e.g., pH 7.00 and pH 10.00 or pH 12.00 for high alkaline range) before each measurement session or as recommended by your pH meter's manual. Ensure the buffers are at the same temperature as your samples.
• Sampla immersió: Immerse the electrode tip fully into the sample solution, ensuring the liquid junction is completely submerged. Stir the sample gently to ensure homogeneity and stable readings.
• Estabilitat de lectura: Allow sufficient time for the reading to stabilize. This electrode features special glass membranes and an adapted diaphragm technique for optimal accuracy, but stabilization time can vary depending on the sample.
• Rinsing Between Samples: Rinse the electrode thoroughly with distilled or deionized water between each sample measurement to prevent cross-contamination.
• Compensació de temperatura: Utilize the temperature compensation feature of your pH meter, or ensure samples and buffers are at a consistent temperature.

Manteniment

Regular maintenance extends the lifespan and ensures the accuracy of your electrode:

• Neteja:
  • Neteja general: After each use, rinse the electrode thoroughly with distilled or deionized water.
  • Dipòsits de proteïnes: For protein contamination, soak the electrode in a pepsin/HCl solution for several hours.
  • Dipòsits inorgànics: For inorganic deposits, soak in a 0.1 M HCl or 0.1 M HNO3 solution for 15-30 minutes.
  • Grease/Oil: For grease or oil, clean with a mild detergent solution, then rinse thoroughly.
• Emmagatzematge: Always store the electrode with its tip immersed in a suitable electrode storage solution (e.g., 3M KCl solution) or the original storage solution provided. No guardeu mai l'elèctrode en sec ni en aigua destil·lada.
• Nivell d'electròlits: Ensure the electrolyte level in the electrode is maintained. Refill if necessary according to the electrode's specific requirements.
• Inspecció: Periodically inspect the glass bulb and junction for cracks, scratches, or blockages.

Resolució de problemes

Si teniu problemes, consulteu la taula següent per veure els problemes i les solucions més habituals:

Especificacions

Garantia i Suport

For information regarding warranty coverage, technical support, or service, please contact WTW directly or refer to their official website. Keep your purchase receipt and model number handy for faster assistance.

Fabricant: WTW