Nasco pHep Electronic pH Tester

This handy, easy-to-use, high-tech instrument does the work of hundreds of rolls of indicator paper. The battery-operated unit features an easy-to-read digital display and an accuracy of 0.1 pH. Ideal for testing pH in food processing, swimming pools, etc. As with all pH meters, calibration solution is recommended before every test. Battery life: approximately 400 hours. Range: 0-14 pH. Dimensions: 7.9" L x 1.8" W x 1" H (20 x 4.57 x 2.54 cm).