First version of the pHep (pH electronic paper), introduced in 1986, 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.

Features

•      Dual-level LCD
•      Battery level indicator
•      Replaceable pH electrode cartridge
•      Instability indicator
•      Automatic shut-off
•      Automatic calibration

Specifications

pH Range                          -2.0 to 16.0 pH
Temperature Range        -5.0 to 60.0°C / 23.0 to 140.0°F
pH Resolution                   0.01 pH
Temperature Resolution 0.1°C / 0.1°F
pH Accuracy                       ±0.05 pH
Temperature Accuracy     ±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                      Automatic
Compensation   
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.)

Supplied with

• pH electrode
• Electrode removal tool 
• 4 (1.5V) batteries
• Waterproof casing