Sonde Survivor Contest

Tell your Hydrolab deployment story and enter to win the new Hydrolab HL4!

Check out Sonde Survivor

Service Plus Programs

Lower lifetime ownership costs and maximize instrument up-time.

Get Service Plus

New Name, Same Company.

Hach Hydromet is now OTT Hydromet, and we're better than ever.

Learn more here

Hydrolab HL4

Next generation multiparameter sonde

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OTT MF pro

Electromagnetic current meter with color handheld display

Learn about the OTT MF pro

New myOTT Portal!


The myOTT portal has been completely redesigned and includes a variety of new customer-focused features

Learn about the improved myOTT customer portal