Product - HQd Meters and IntelliCAL™ Probes

HQd Meters and Fully Interchangeable Probes  

The smart choice for multi-parameter lab & field measurement.


Hach, the leader in water quality, has developed a customized electrochemistry solution for water quality testing that takes the guesswork out of your measurements.

Hach HQd IntelliCAL smart probes:

  • automatically detect the testing parameter
  • automatically recognize the calibration history & method settings
  • minimizes errors
  • minimizes setup time

Hach gives portable measurement flexibility and ease of operation with its HQd meter and full suite of interchangeable IntelliCAL laboratory and field probes.

  • pH including pH ultra for rapid measurement of all samples and difficult low-ionic strength waters
  • ORP (Oxidation Reduction Potential)
  • Sodium Ion Selective Electrode (ISE)
  • Conductivity
  • DO with patented Hach LDO® (Luminescent Dissolved Oxygen) technology
  • BOD measurement utilizing patented Hach LDO technology
  • Ammonia Ion Selective Electrode (ISE)
  • Chloride Ion Selective Electrode (ISE)
  • Fluoride Ion Selective Electrode (ISE)
  • Nitrate Ion Selective Electrode (ISE)
  • Ammonium Ion Selective Electrode (ISE)

Parameter-Specific HQd Meters and Probes  

Hach's Line of Meters & Probes  

Choose the right tools for you:

HQd Configurator

Build your own HQd System with our new product configurator!


HQd Digital Catalog

All the tools you need to decide if HQd is for you!
HQd Digital Catalog


Electrochemistry Selection Guide

Download Hach's Lab & Field Meters & Probes Selection Guide to see our entire family of meters & probes. (PDF: 5MB)


Watch the Video