About
For over 60 years, Hach Company has been developing innovative solutions used to test the quality of water, other liquids and air. Manufactured and distributed worldwide, Hach systems are designed to simplify analysis by offering sophisticated on-line instrumentation, accurate portable laboratory equipment, high-quality prepared reagents, complete easy-to-follow methods, and life-time technical support. Hach is a wholly owned subsidiary of Danaher Corporation, a Fortune 500 leader.

Product Catalog
Technical Articles
Introduction to Oxidation Reduction Potential Measurement (.pdf)
(Environmental Sensors)
Oxidation Reduction Potential (ORP or Redox Potential) measures an aqueous system's capacity to either release or accept electrons from chemical reactions. When a system tends to accept electrons, it...
(View Full Article)
