Made in China
The Hanna 107 is a Pen Type Pocket pH Meter suitable for laboratory, school, college, personal and analytical use. It has a range of pH 0.0 to 14.0 pH, a resolution of pH 0.1 pH, and an accuracy of pH ±0.1pH. It has 3 x 1.5V batteries to operate it and works up to about 150 hours