The pHep by Hanna Instruments is robust and reliable and is ideal for both laboratory and field use. It is pocket-sized and also waterproof. This tester is less than 2 cm thick, ergonomic, and comfortable to hold. The pHep has only 2 buttons, one dedicated to turning the device on and off, the other dedicated to calibration, making it very simple to use.
Temperatures can be displayed in °C or °F.
The LCD screen displays both stability indicators and calibration tags.
The battery charge percentage is displayed when the instrument is turned on, indicating the remaining charge.
Features:
Slim and ergonomic design with rounded edges and less than 2 cm thick
Large multi-level LCD display measuring 29 x 20 mm, allows the user to read both pH and temperature simultaneously
Two buttons for operation: one for turning on and off, the other for calibration
Integrated temperature sensor, allows automatic compensation of pH measurements based on temperature. Temperature can be displayed in °C or °F
Automatic calibration at one or two points with standard buffers (pH 4.01, 7.01, and 10.01)
Clock-shaped stability indicator disappears when the reading has stabilized
Automatic shut-off after 8 minutes or 60 minutes to extend battery life
Low battery indicator, displayed when the remaining battery life is less than 10%
When turned on, all display segments are shown for 1 second, then the remaining battery charge percentage is also displayed
Technical details:
pH range: from 0.0 to 14.0 pH
pH resolution: 0.1 pH
pH accuracy (at 20°C): ±0.1 pH
Temperature range: from 0.0 to 50.0°C / 32.0 to 122.0°F
Temperature resolution: 0.1°C / 0.1°F
Temperature accuracy at 20°C: ±0.5°C / ±1.0°F
pH calibration: automatic at 1 or 2 points
Temperature compensation: automatic from 0 to 50°C (32 to 122°F)
Power supply: 1 x 3V CR2032 / about 800 hours of continuous use
Automatic shut-off: after 8 minutes or 60 minutes. Can be disabled