The pHep®4 and pHep®5 testers are for users that require the greatest accuracy and features while staying economical. The pHep®4 has a 0.1 pH resolution and pHep®5 reads up to 0.01 pH.
Both models have BEPS, which prevents taking a reading due to low battery as well as user-selectable automatic shut-off, replaceable pH electrode cartridge, stability indicator and automatic calibration.
- Waterproof and designed to float
- Automatic Temperature Compensation
- HOLD button to freeze readings on the display
- BEPS Alerts the user of low battery power that could adversely affect readings
pH Range -2.00 to 16.00 pH pH Resolution 0.01 pH pH Accuracy ±0.05 pH Temperature Range -5.0 to 60.0°C / 23.0 to 140.0°F Temperature Resolution 0.1°C / 0.1°F Temperature Accuracy ±0.5°C /±1°F pH Calibration automatic, at one or two points with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18) Temperature Compensation automatic Battery Type/Life 1.5V (4) / 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.) Ordering Information HI98127 (pHep®4) and HI98128 (pHep®5) are supplied with HI73127 pH electrode, HI73128 electrode removal tool, batteries and instructions.