Hach Company - Flow Products & Services

Hach Company - Flow Products and Services, including our legacy brands Sigma and Marsh-McBirney, has a proven track record of creating industry-leading innovations with unwavering product accuracy in the open-channel flow measurement world. Empowering you with true and timely flow data for your analysis, we dramatically reduce your risk and enable you to make critical wastewater flow decisions with absolute confidence. And smart decisions mean you're proactively managing your flow, rather than reactively dealing with problems. From state-of-the-art wireless flow loggers and industry-pioneering non-contact flow sensors, as well as our revolutionary Hach Data Delivery Services (DDS), Hach Flow is committed to providing flexible solutions for all of your flow monitoring challenges.


5600 Lindbergh Drive
Loveland, CO 80539
United States
Toll-free: 800.368.2723
Phone: 970.622.7120
Fax: 970.619.5150


The Quest for Good Flow Data
Submerged AV Monitoring System
FL900 Series Flow Logger
FLO-TOTE 3 AV Sensor
FH950 Handheld Flowmeter
Removing a FLO-DAR AV Sensor
Installing an Ultrasonic Sensor
Installing a Flow Logger Antenna

Industry News + Articles

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Product Categories

Storm Water Monitoring Equipment; Flowmeters; Rental Services; Flowmeters, Ultrasonic; Meters, Ultrasonic

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