Application Note

Continuous Determination Of Organic Loading In Wastewater

Source: Hach Company

The UVAS sc Sensor is a patented method for the continuous measurement of UV absorption (dissolved organic substances in water), in conformity with DIN 38404. In water analysis, UV absorbance measurement is a rapid, low-cost and environmentally-friendly alternative to continuous DOC/TOC measurement and COD determination. Through measurement directly in the water, the possibility of errors due to sample conditioning are eliminated.


  • No sample extraction
  • Instant measurement
  • No reagents
  • Low-maintenance
  • Self-cleaning system for operational reliability