Applying new technology in laser detection and fiber optics, Hach’s new FilterTrak 660 Laser Nephelometer enables drinking water and wastewater utilities to monitor water quality with greater accuracy, reliability and economy than ever before. The new instrument operates with 150 times greater sensitivity than a conventional turbidimeter, and it’s optimized to measure turbidity in the range of 0-1 NTU—the range that matters most. The new nephelometer offers a reliable and cost-effective alternative to online particle counters.