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Portable Extended Range pH/ORP/Temperature Meter

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Clarkson Price: This item has been discontinued by the manufacturer. See HI991001 or HI991003
Clarkson Catalog Number: HI991002
Manufacturer: Hanna Instruments
Supplier Catalog Number: HI991002
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Clarkson HI991002
Portable Extended Range pH/ORP/Temperature Meter
Hanna Instruments HI991002 / Spectrum 240-19587 
  • Multi-level LCD display; Display the current measurement simultaneously with the current temperature.
  • On-screen tutorial messages
  • Automatic Temperature Compensation
  • Automatic one or two point calibration
  • HI1297 pH/ORP/Temperature and HI1296 pH/Temperature probe in titanium enclosure
  • BEPS; (Battery Error Prevention System) alerts the user in the event that low battery power could adversely affect readings
  • Battery % displayed on startup.
  • Compact, heavy-duty, and waterproof
HI991002 is ideal for plating baths, wastewater, swimming pool and spa water quality and environmental applications. HI991002 measures pH/ORP/temperature.
HI1297D pH/ORP/temperature probe features an easy to clean recessed tip that prevents solids in solutions from collecting on the sensor. The AISI 316 stainless steel and titanium body of these probes function as a potential matching pin for increased stability of readings and extended sensor life.
This compact instrument fits in the palm of your hand and the bottom probe connection ensures the electrode cable doesn’t get in your way.
-2.00 to 16.00 pH
±1999 mV
-5.0 to 105.0°C; 23.0 to 221.0°F
0.01 pH
1 mV
Accuracy @ 20°C
±0.02 pH
±2 mV
±0.5°C up to 60°C; ±1.0°C outside; ±1.0°F up to 140°F; ±2.0°F (outside)
automatic, -5.0 to 105.0°C (23.0 to 221.0°F)
pH Calibration
automatic one or two point calibration with two sets of memorized buffers (standard 4.01, 7.01, 10.01 or NIST 4.01, 6.86, 9.18)
HI1297D pre-amplified pH/ORP probe with internal temperature sensor, DIN connector and 1 m (3.3’) cable (included)
Battery Type / Life
1.5V (3) AAA / approximately 1200 hours of continuous use. auto-off after eight minutes of non-use
0 to 50°C (32 to 122°F); RH max. 100%
152 x 58 x 30 mm (6.0 x 2.3 x 1.2”)
205g (7.2 oz.)
pH/ORP Electrode for Water Treatment Applications
pH 4.01 buffer solution
pH 7.01 buffer solution
pH 10.01 buffer solution
ORP Test Solution at 200/275 mV (@20°C)
1 x 500 mL bottle
General Purpose Cleaning Solution
1 x 500 mL bottle
Electrode Storage Solution
1 x 500 mL bottle
Shockproof Rubber Boot
Streamlined Style Casing, Orange
Shockproof Rubber Boot
Streamlined Style Casing, Blue
Order Information:
HI991002 is supplied with HI1297D pH/ORP probe with internal temperature sensor, HI70004 pH 4.01 buffer sachet,
HI70007 pH 7.01 buffer sachet, HI700661 electrode cleaning solution sachet (2), batteries, instructions and rugged
carrying case.

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