Hach is a United States-based company that specializes in the manufacturing of test and measurement equipment, as well as machinery, primarily serving the water quality analysis sector. Founded in 1933, Hach has grown to employ between 5,001 and 10,000 individuals and reported a revenue of approximately $1.49 billion. The company is recognized for its commitment to providing reliable solutions for water testing, ensuring compliance with regulatory standards, and enhancing water quality management practices. Hach's published materials include technical reports that delve into various aspects of water quality testing methodologies and equipment performance. The company’s focus on innovation and technical expertise is evident in its documentation, which aims to support professionals in the field with accurate data and insights. Overall, Hach plays a significant role in the manufacturing industry, particularly in providing essential tools and information for effective water quality monitoring and management.