User manual HANNA INSTRUMENTS ELECTRODES

[. . . ] Immerse the tip in the sample and stir gently for approx. For a faster response and to avoid cross contamination of the samples, rinse the electrode tip with a few drops of the solution to be tested, before taking measurements. IMPORTANT: After performing any of the cleaning procedures rinse the electrode thoroughly with distilled water, drain and refill the reference chamber with fresh electrolyte, (not necessary for GEL filled electrodes) and soak the electrode in HI70300 Storage Solution for at least 1 hour before taking measurements. TROUBLE SHOOTING pH Meter: Follow attentively the meter's operating and calibration procedures from the instruction manual. Electrode: Evaluate your electrode performance based on the following possibilities. [. . . ] Allow the electrode to stand upright for 1 hour. · Follow the Storage Procedure above. · · · CLEANING PROCEDURE · · General - Soak in Hanna HI7061 General Cleaning Solution for approximately 1 hour. Removal of films, dirt or deposits on the membrane/junction: - Protein Soak in Hanna HI7073 Protein Cleaning Solution for 15 minutes. - Inorganic Soak in Hanna HI7074 Inorganic Cleaning Solution for 15 minutes. - Oil and grease Rinse with Hanna HI7077 Inorganic Cleaning Solution. Each solution is available in M or L size (230 or 460 mL). Electrolyte Solutions are supplied in kits 4X50 mL. Check with your nearest Hanna Dealer for more information. IstrElect 05/95 Stay in touch with the manifacturer. . . PERIODIC MAINTENANCE · Inspect the electrode for any scratches or cracks. Rinse off any salt deposits with water. ELECTRODE INSTRUCTION GUIDE Code: PREPARATION · Remove the protective cap. DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT. This is normal with electrodes and they will disappear when rinsed with water. Shake the electrode down as you would do with a clinical thermometer to eliminate any air bubbles inside the glass bulb. Feel Hole Fill Hole Sleeve Cover Screw If the bulb and/or junction are Reference Fill Hole dry, soak the electrode in Reference Fill Hole HI70300 Storage Solution for at Reference least one hour. Fill Hole Sensitive Wire Reference Wire · For refillable electrodes: Drain the reference chamber with a syringe and refill it with fresh electrolyte (HI7071 for single junction or HI7082 for double junction electrodes). Allow the electrode to stand upright for 1 hour. · Follow the Storage Procedure above. · · CLEANING PROCEDURE · General - Soak in Hanna Solution HI7061 for approximately 1 hour. · Removal of films, dirt or deposits on the membrane/junction: - Protein - Soak in Hanna Solution HI7073 for 15 minutes. - Inorganic - Soak in Hanna Solution HI7074 for 15 minutes. - Oil and grease - Rinse with Hanna Solution HI7077. IMPORTANT: After performing any of the cleaning procedures rinse the electrode thoroughly with distilled water, drain and refill the reference chamber with fresh electrolyte, (not necessary for GEL filled electrodes) and soak the electrode in HI70300 Storage Solution for at least 1 hour before taking measurements. For refillable electrodes: · If the fill solution (electrolyte) is less than 1 cm (½") below the fill hole, add HI7082 for double junction or HI7071 for single junction electrodes. [. . . ] Low Slope: Refer to Cleaning Procedure above. No Slope: Check electrode for cracks in glass stem or bulb and replace the electrode. Slow Response/Excessive Drift: Soak the tip in Hanna Solution HI7061 for 30 minutes, rinse thoroughly in distilled water and then follow Cleaning Procedure above. · · MEASUREMENT · · · Rinse the electrode tip with distilled water. [. . . ]