1. High-precision bromide ion concentration meter featuring a backlit liquid crystal display (LCD).
2. The ion concentration values can be directly read out, eliminating the need for complicated conversions and calculations.
3. It has an automatic electrode diagnostic function, with the display of calibration points and slopes. 
4. Automatic temperature compensation is provided to guarantee accurate measurements across the entire measurement range.
5. The automatic power-off function is available, which effectively reduces battery power consumption. 
6. Equipped with a USB communication interface, it enables easy data transfer to a personal computer or connection of a power adapter to the meter.

Precautions
1. New purchased electrodes or electrodes that have not been used for a long time should be soaked in the designated activation solution for at least 1 hour before use (refer to the electrode manual for specific activation solution and time).
2. After activation, rinse the electrode thoroughly with deionized water to ensure there is no residual activation solution on the surface.
3. After each measurement, immediately rinse the electrode with deionized water to remove any residual sample solution on the surface.
4. For electrodes that are difficult to clean (such as fluoride ion electrodes), a dedicated cleaning solution (such as a dilute hydrofluoric acid solution) can be used to gently wipe the electrode surface, but be careful not to damage the sensitive membrane of the electrode.
5. After use, soak the electrode in an appropriate storage solution (such as a low-concentration solution of the ion to be measured or the solution recommended in the electrode manual) to prevent the electrode surface from drying out or getting contaminated.
6. Avoid exposing the electrode to the air for a long time, especially for electrodes that are prone to moisture (such as sodium ion electrodes).
7. Before measurement, calibrate the ion meter with standard solutions. The concentration of the standard solution should cover the concentration range of the sample to be measured. During the calibration process, ensure the instrument reading is stable before proceeding to the next step. After calibration, check if the slope and intercept of the instrument are within the normal range.
8. Ensure the sample is representative. Take samples from multiple locations and mix them evenly. For samples containing suspended solids, filter them first; for samples containing organic matter, appropriate oxidation treatment can be carried out to eliminate interference.
9. The sample temperature should be as close as possible to the calibration temperature (usually around 25℃) to minimize the impact of temperature differences on the measurement results. If necessary, use a constant temperature water bath for sample pretreatment.
10. When immersing the electrode in the sample solution, ensure that the sensitive part of the electrode is completely immersed in the solution, but do not touch the bottom of the container. The immersion depth is generally 1/3 to 1/2 of the electrode length.
11. After immersion, gently stir the sample solution to evenly distribute the ions, but avoid generating bubbles. Wait for the instrument reading to stabilize (usually 1-5 minutes) before recording the result.
12. If the reading is unstable for a long time, it may be due to contamination on the electrode surface or the presence of interfering substances in the sample. In this case, clean the electrode or treat the sample again.
13. Calibrate the instrument with standard solutions once a week or month to ensure the accuracy of the measurement results. The calibration frequency can be adjusted according to the usage frequency of the instrument and the measurement accuracy requirements.
14. Regularly wipe the instrument housing and electrode connectors with a soft cloth dipped in a small amount of alcohol to prevent the accumulation of dust and dirt. However, be careful not to let the alcohol flow into the instrument interior.
15. Regularly check if the power cord and electrode connection wires are damaged or loose. If any problems are found, replace or repair them in time to avoid affecting the measurement results or damaging the instrument.
16. When the instrument is not in use for a long time, store it in a dry, clean, and well-ventilated environment to prevent moisture, heat, or chemical corrosion. At the same time, ensure the electrode is stored in the appropriate solution as required and turn off the instrument power.