KL-009(III) high accuracy pen type PH meters uses combined pH electrode of high sensitivity , fast response, and good repetition as probe. With 31/2 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. This product has been exported in batches. Temperature compensation and temperature display.Both pH and temperature are dual displayed in an easy to read digital format. pH Tester provides instant and accurate pH readings. Reliable tester displays pH and temperature simultaneously.