WTW, a Xylem Brand, offers the most comprehensive program of high-quality measuring devices for water analysis in the world. Their reliability, operational safety and versatility have made WTW's products a worldwide industry standard:

• Laboratory and Field Instrumentation
  Meters and measuring systems for electro-chemical, photometric, turbidity measurements as well as for the determination of biological degradability. 
• Process Instumentation (Online Water Quality Monitoring System)
  The most complete series of measuring instrumentation as well as accessories for the measurement and monitoring of water and wastewater.