When HANNA instruments® introduced it’s first version of the pHep® (pH electronic paper) in 1986, it immediately revolutionized the standard in pH measurement. The 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 pHep®'s have gone to satisfied customers around the world.
We at HANNA instruments® 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 include features such as a dual-level LCD, battery level indicator, replaceable pH electrode cartridge, stability indicator, automatic shut-off and automatic calibration all in a floating, waterproof casing.
The pHep®4 and pHep®5 use the exclusive cartridge pH electrode. Electrode replacement with the stainless steel round connector means there are no pins to bend or break during replacement.
The pHep®’s replaceable electrode has a pull-out cloth junction. When the cloth junction becomes dirty from routine testing, simply pull out 3 mm (1/8”) to rejuvenate the electrode.
The pHep®4 and pHep®5’s exposed temperature sensor provides fast response time, and its proximity to the pH electrode guarantees much more accurate temperature compensated readings.
|HI 98127 (pHep®4)||HI 98128 (pHep®5)|
|Range||pH -2.0 to 16.0||pH -2.00 to 16.00 pH|
|Temperature||-5.0 to 60.0°C / 23.0 to 140.0°F|
|Resolution||pH||0.1 pH||0.01 pH|
|Temperature||0.1°C / 0.1°F|
|Accuracy (@20°C)||pH||±0.1 pH||±0.05 pH|
|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)
|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.)|
|HI 98127||(pHep®4) is supplied complete with protective cap, electrode removal tool, batteries and instructions.|
|HI 98128||(pHep®5) is supplied complete with protective cap, electrode removal tool, batteries and instructions.|
|HI 73127||Spare electrode for HI 98127 and HI 98128|
|HI 70004P||pH 4.01 buffer solution, 20 mL sachet, 25 pcs.|
|HI 70006P||pH 6.86 buffer solution, 20 mL sachet, 25 pcs.|
|HI 70007P||pH 7.01 buffer solution, 20 mL sachet, 25 pcs.|
|HI 70009P||pH 9.18 buffer solution, 20 mL sachet, 25 pcs.|
|HI 70010P||pH 10.01 buffer solution, 20 mL sachet, 25 pcs.|
|HI 7061M||Cleaning solution, 230 mL bottle|
|HI 73128||Electrode removal tool|