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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 Instruments HI 98128 pH Pocket Tester

HANNA® have always valued the comments and suggestions coming from our customers. For this series, we 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.

Order Information:
HI 98128 (pHep 5) is supplied with protective cap, electrode removal tool, batteries and instructions.

Range pH -2.00 to 16.00 pH
Range Temperature -5.0 to 60.0°C / 23.0 to 140.0°F
Resolution pH 0.01 pH
Resolution Temperature 0.1°C / 0.1°F
Accuracy pH ±0.05 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.)
HANNA INSTRUMENTS - HI 98128 PH POCKET TESTER
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