Hanna Instruments HI 2221 Instruction Manual

Also see for HI 2221: Instruction manual

34PREPARATION PROCEDUREPREPARATION PROCEDUREPREPARATION PROCEDUREPREPARATION PROCEDUREPREPARATION PROCEDURERemove the protective cap of the pH electrode.DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. This is normalwith electrodes. They will disappear when rinsed with water.During transport, tiny bubbles of air may form inside the glass bulbaffecting proper functioning of the electrode. These bubbles can beremoved by “shaking down” the electrode as you would do with a glassthermometer.If the bulb and/or junction is dry, soak the electrode in HI 70300 orHI 80300 Storage Solution for at least one hour.ELECTRODE CONDITIONINGELECTRODE CONDITIONINGELECTRODE CONDITIONINGELECTRODE CONDITIONINGELECTRODE CONDITIONING& MAINTENANCE& MAINTENANCE& MAINTENANCE& MAINTENANCE& MAINTENANCE