The new HI 991001 pH meter from Hanna offer IP 67 waterproof protection in a compact casing. The included multi-parameter electrode has a built-in temperature sensor. No additional temperature probe is required.

The electrode also contains a mini amplifier to render your measurements impervious to noise and electrical interference.

The large display shows readings in an extended range from -2.00 to 16.00 pH and simultaneously shows temperature from -5.0 to 105.0 °C or 23 to 221°F. HI 991002 also measures ORP from -1999 to 1999 mV. The mV scale of this meter can be used with the available HI 1296D pH/temperature electrode to check the condition of the pH electrode.

This meter has a stability indicator and hold feature that prompts you when to take the reading & freezes the display for easy and accurate recording. The large display also has graphic symbols to guide you through all operations. The battery life of the meters guarantee over 1500 hours of continuous use. At startup, it performs a self-check and then display the remaining battery level to assure proper working condition. Calibration is performed automatically at one or two points using standard or N.I.S.T. buffers.

HI 991001 is supplied complete with HI 1296D pH/temperature electrode, 3 x 1.5V AA batteries and carrying case.