Product - COD Measurement


Designed by water experts, for water experts. Hach provides a truly integrated system with spectrophotometers, chemistries, and methods that are developed, designed and manufactured to optimize your results. All spectrophotometers featured below offer time-saving automatic method detection and superior accuracy when using Hach's TNTplus™ reagents.


DR 6000™ UV-VIS Spectrophotometer

DR 6000™ UV VIS Spectrophotometer with RFID Technology

Advanced Quality Assurance at Your Fingertips.
The industry's most advanced lab spectrophotometer.

  • High-speed wavelength scanning across the UV and Visible Spectrum
  • Greatest analysis flexibility with accessories designed to accommodate high-volume analysis and applications requiring greater sensitivity
  • Guided step-by-step testing procedures 
  • Automatically Avoids Errors with RFID technology and TNTplus™ reagent vials
  • More than 250 pre-programmed water analysis methods
  • Integrated QA software package for scheduling, documenting and interpreting quality measurements







DR 3900™ Benchtop Spectrophotometer

DR3900 Benchtop VIS Spectrophotometer with RFID* Technology

Prevent Measurement Errors...Simply.
Built with the future of water analysis in mind, the DR 3900 will give consistently accurate results in a simpler testing format.

  • On-screen, step by step testing procedures
  • Elimination of False Results with TNTplus™ chemistry
  • Hands Free Updates of chemistry lot information
  • Flexible Connectivity with 1 ethernet and 3 USB ports
  • RFID Sample Tracking system eliminates sample mix-ups


*RFID available only in US, Canada, Australia, and New Zealand. Customers in other countries should order LPV440.99.00002.