Compact pH tester for water analysis

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The pH value is very important when it comes to assessing the current state of water in aquariums or pools but also for the evaluation of many other liquids. With its very clear display and a resolution of 0.01 pH, the compact PCE-PH 16 recognises even minor changes in the pH value, even when the lighting conditions are poor.

The pH meter is powered by three LR44 (AG13) batteries. In environments with temperatures between 0 and 50 °C, the measured values are automatically compensated by the pH tester’s temperature compensation. The pH tester is well suitable for measurements on samples in the laboratory and also for outdoor use.

The pH meter is very easy to operate as it has only two keys. The HOLD key located next to the ON/OFF key is used to hold the reading on the display.

The PCE-PH 16 has an accuracy of 0.1 pH. The correctness of the measurements can be checked easily. To do so, the pH value of special calibration liquids is measured. A set of 2 calibration solutions with pH values of 4.00 and 7.00 is available as an option. If the displayed value deviates, the pH meter can be adjusted by means of a screw. The required screwdriver is included in the standard package. After the adjustment, the setting is checked with the help of the second liquid gel. If a reliable adjustment is no longer possible, the electrode can be very easily replaced. You can use any pH electrode with a BNC plug.

To make sure the measurement is not distorted by residues from previous measurements, the electrode must be cleaned after each measurement. The electrode tip is protected from drying out by the soaked sponge in the storage container. This sponge can be soaked with potassium chloride solution with 3 mol/l.

The pH meter from PCE Instruments is a robust, simple pH meter, ideal for private users looking for low-cost but high-quality meters, suitable for control measurements in industry and agriculture, for checking running waters but also for use in education.

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Robin Matthäi
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