Hanna HI991003 | Waterproof Portable pH, ORP & Temperature Meter

Water-treatment and process technicians often need both pH and oxidation-reduction potential to understand whether chemical conditions are moving in the required direction. Carrying separate instruments adds handling and calibration work. The Hanna HI991003 Portable pH/ORP and Temperature Meter combines these measurements in one waterproof field meter.

Its supplied HI12973 pre-amplified titanium-body probe measures pH, ORP and temperature through one rugged assembly. ORP measurement extends to ±1999 mV, while pH covers -2.00 to 16.00 with automatic one- or two-point calibration. The three-line LCD lets you view parameters at once, and the probe-condition indicator shows when the electrode needs attention. IP67 protection and approximately 1400-hour battery life support regular site work. We recommend HI991003 where oxidation control is as important as acidity.

Combined pH and ORP measurement is particularly useful in Pakistan's water-treatment plants, swimming pools, wastewater facilities, electrochemical processes and industrial utility systems where oxidation conditions must be monitored alongside acidity. The HI991003 combines both parameters in one portable meter. Kamadi Pakistan supplies the Hanna HI991003 for professional pH, ORP and temperature monitoring.

pH/ORP Meter Selection Guide

Choose HI991003 for applications requiring pH, ORP and temperature together, particularly water treatment, pools, plating and environmental monitoring. For pH-only work, HI991001 is the simpler choice.

Key Features

• Simultaneous pH, ORP and temperature measurement
  
• HI12973 titanium-body combination probe
  
• ±1999 mV ORP measuring capability
  
• Automatic pH calibration
  
• IP67 waterproof construction
  

Technical Specifications

• Model: HI991003
  
• pH Range: -2.00–16.00 pH
  
• pH Resolution: 0.01 / 0.1 pH
  
• pH Accuracy: ±0.02 / ±0.1 pH
  
• ORP Range: ±1999 mV
  
• ORP Resolution: 1 mV
  
• Temperature Range: -5.0–105.0°C
  
• Probe: HI12973 titanium pH/ORP/temperature probe
  
• Protection: IP67
  
• Battery Life: Approx. 1400 hours
  

Applications

• Water treatment
  
• Swimming pools and spas
  
• Plating baths
  
• Process water
  
• Environmental testing
  

Professional Tip: ORP readings are most useful as a process trend; compare values using the same probe condition, sample point and operating conditions rather than treating one isolated mV reading as the whole picture.