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.

Hach Flow - Right Data. Right Results. Right Now.

FSDATA Desktop Instrument Manager

Improve your efficiency
in the field.

Free software designed specifically for field crews to reduce time needed to set-up,
download and maintain your
Hach FL900 Series Flow Loggers.

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The Quest Video

Hunting for Good Flow Data?

DDS offers the path of least resistance.

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Focus On Flow eNewsletter

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Flow Monitoring Solutions

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Online Calc

Online Calculator

On-line open channel
& full-pipe flow calculator for pros in the water & wastewater field.

» Calculator link

Ask the ExoertsAsk the Experts

Over 50 years of combined experience to assist you with your flow monitoring inquiries.

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Product & technology newsletter.

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FLow ApplicationFlow Application Review

Allow us to evaluate and recommend the ideal solution for your flow monitoring application.

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P.O. Box 389, Loveland, CO 80539-0389 U.S.A.
800.368.2723
Toll Free US & Canada • 970.622.7120 Outside US & Canada • 800.635.1230 24/7 Technical Support