HACH LANGE is THE single-source supplier for complete water analysis - with individual, made-to-measure, economic, high quality, total solutions: Parameters for wastewater, drinking water, process water On-site and laboratory analysis, process analysis, samplers Municipal and industrial applications, research HACH LANGE brings a new dimension to water analysis, based on a long tradition of excellence. The combination of Hach and Dr. Lange can draw on more than 120 years of experience of development, production and on-site applications. You, too, can benefit from our comprehensive range of products and services.