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If you have any specific questions about our products or services, please feel free to contact our Customer Service Department:

By Phone:

800.368.2723 (Toll Free US and Canada)
301.874.5599 (outside US and Canada)
800.635.1230 (24/7 Technical Support)

By Fax:

301.874.8459

By E-mail:

Sales - hachflowsales@hach.com
Tech Support - hachflowservice@hach.com
You may also complete an on-line contact form

Please note that telephone support is available Monday through Friday between 9:00 AM and 5:00 PM U.S. Eastern Time.

Online Calc

Online Calculator

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

» Calculator link

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FLow ApplicationFlow Application Review

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Copyright © 2014 Hach Company

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