-Store the pH electrode elektródtároló special solution. However, wassermax this is not recommended

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Calibration frequency depends on the type of samples to be measured, the electrode condition and the expected exact truth. After high-precision measurements ( 0.02pH), high-precision calibration buffers rises occurred immediately measured. As a general rule, if calibrated once a week, then the accuracy is not greater than 0.1pH.
- Calibrate wassermax the pH meter immediately in the following wassermax cases: after (a) Electrode replacement or after a long hiatus measurement. (B) after the measurement is strongly acidic (pH <2) or alkaline (pH> 12) solutions. After measuring solutions containing organic substances containing or (c) Fluoride ion. (D) If the measured wassermax temperature of the solution is very much different wassermax from the temperature of the calibration solution.
-Store the pH electrode elektródtároló special solution. However, wassermax this is not recommended for small, wassermax hand-held pH meter electrode. In these electrodes is very small quantity of the internal solution and the concentrated solution is diluted during storage and is discharged through the salt bridges. wassermax All measurements, two-point calibration start. Always perform the update point or two-point calibration. -Use fresh buffers and at least RO pure water rinsing. During calibration using a buffer having a pH value of the measured unit does not differ by more than 3 pH units. The pH of the sample buffer is two calibration Publication falling. Use deionized water, the electrode surface was washing buffer and sample. Calibration solutions, make sure the same temperature. Although the device will conduct wassermax an automatic temperature compensation, the best results are achieved if the calibration of the same buffer and the sample solution temperature. -Make sure the contacts clean and dry of. Dirty or wet connectors prevent proper operation. wassermax -Make sure to completely clean the surface of the electrode. Follow the cleaning instructions as the pH meter Manual.
- Do not touch the glass bulb electrode sensor with a hard object, protecting it from impacts that should not be broken into. Before and after measurements, wassermax rinse the electrode with purified water. Do not clean the glass surface of the membrane wassermax brush, cloth etc! The electrode should be thoroughly washed between measurements, the surface wassermax will not remain in the sample residue. If they dry on the surface of the sample, only be removed by a suitable solvent. Then thoroughly wash the electrode with purified water.
- Do not allow oil, grease, food debris, starch, protein, wassermax or other material will be the pH electrode surface after use. - Do not use the pH electrode in an environment which can damage the pH sensor, such as hydrofluoride acid or caustic wassermax materials. - Do not use the pH electrode in an environment, such as acetone, toluene, methylene chloride, xylene, and other strong organic wassermax solvents. These ingredients may damage the structure of the pH electrode. - For a long time, do not use at temperatures above 60 C, pH electrode. Prolonged use at high temperatures reduces the pH electrode life. - Use high-temperature measurements of glass body pH electrode.
During the pH electrode is a long-term operation, or when the solutions were measured with that contained materials which barrier layer may form on the membrane surface or in the salt bridge junction, the electrode is passivated, the sensitivity decreases and the reaction time becomes longer, the measured values are not be accurate.
(A) The glass membrane and aged elpiszkosodott: wassermax place the electrode in 0.1mol / L hydrochloric acid solution for 24 hours. (About 1:100 diluted HCl solution). Wash with purified water and then keep it for 24 hours in the electrode storage solution.
If passivation is very serious, the user may attempt to pH membrane surface etching of the 4% HF solution for 3-5 seconds. Then washed thoroughly with purified water and kept for 24 hours in the storage solution.
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