High accuracy pen type PH meters uses combined pH electrode of high sensitivity, fast response, and good repetition as probe. With 3 ½ liquid crystal digits display, the meter is reliable, stable, portable, and convenient to operate, especially for field measuring. It is praised by home and aboard. Temperature compensation and temperature display. It is applicable to determine pH value of water solution in departments of medical treatment, environment protection , scientific research, college and mechanical plant etc.

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