HI 98127 pHep*4

When HANNA® introduced its first version of the pHep (pH electronic paper) in 1986, it immediately revolutionized the standard in pH measurement. pHep's ease-of-use in combination with its affordability made it possible for non-technical and technical personnel alike to measure pH on the spot, accurately and inexpensively throughout a variety of industries. Since its introduction, over 1 million pHeps have gone to satisfied customers around the world.
HANNA® has always valued the comments and suggestions coming from our customers. For this series, they have included all of the features you have asked for and more! The pHep 4 and pHep 5 includes features such as a dual-level LCD, battery level indicator, replaceable pH electrode cartridge, instability indicator, automatic shut-off and automatic calibration all in a floating, waterproof casing.

Range	pH	-2.0 to 16.0 pH
Range	Temperature	-5.0 to 60.0°C / 23.0 to 140.0°F
Resolution	pH	0.1 pH
Resolution	Temperature	0.1°C / 0.1°F
Accuracy	pH	±0.1 pH
Accuracy	Temperature	±0.5°C / ±1°F
pH Calibration	 	automatic, at 1 or 2 points with 2 sets of memorized buffers
(pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18)
Temperature Compensation	 	Automatic
Battery Type / Life	 	4 x 1.5V with BEPS / approx. 300 hours of continuous use;
auto-off after 8 minutes of non-use
Environment	 	-5 to 50°C (23 to 122°F); RH max 100%
Dimensions	 	163 x 40 x 26 mm (6.4 x 1.6 x 1.0")
Weight	 	100 g (3.5 oz.)