At the cost of just a few rolls of litmus paper, you can have the industry's best pocket-size pH tester.
The Checker supplies you with fast and accurate readings from 0.00 to 14.00 pH with a resolution of 0.01 pH.
This compact tester features a large easy-to-read LCD and a simple to perform 2-point calibration.
The pH electrode of the Checker can be replaced; simply unscrew the electrode from the meter body and screw on a new one.
The Checker is fast, accurate, lightweight and with 3000 hours of battery life, you don't have to worry about frequent battery replacement.
Testing pH has never been easier!

Range	pH	0.00 to 14.00 pH
Resolution	pH	0.01 pH
Accuracy	pH	±0.2 pH
Calibration	 	manual, 2 points
Electrode	 	HI 1270 (included)
Battery Type / Life	 	2 x 1.5V / approx. 3000 hours of continuous use
Environment	 	0 to 50°C (32 to 122°F); RH max 95%
Dimensions	 	66 x 50 x 25 mm (2.6 x 2.0 x 1.0") - without probe
Weight	 	50 g (1.8 oz.)