6-Series Discontinuation

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Best in Class Just Got Better

The tremendous success of the 6-series Sondes pushed the YSI team to take water quality monitoring to a new level.  YSI’s EXO Sondes launched in 2012, bringing significant advancements that ranged from enhanced sensor specifications to best-in-class antifouling.  The 20+ year 6-series technology is now obsolete, so we encourage users to make the transition to the superior EXO line.  Please be aware that:

  • Only the 6920-V2, 600LS, and 600OMS sondes will be available after December 31, 2017
  • These three remaining sondes are intended to no longer be available after December 31, 2018
  • The 650 handheld display will no longer be available after December 31, 2017, and
  • Sensors, cables and accessories required to maintain the sondes in the field will be available until December 31, 2023
See all the benefits of upgrading to an EXO sonde.

Where Will You Go With EXO?

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Let's Talk About Quality Data

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Additional Resources

EXO Product Brochure

EXO User Manual


Case Study: On-Line Monitoring of Cyanobacteria in Source Waters

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Learn how members of the University of New South Wales used EXO to better monitor cyanobacteria in important local watersheds.