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Observator 100 years

YSI ProSolo Optical Dissolved Oxygen Handheld

The ProSolo digital handheld meter is designed for use with YSI’s latest optical dissolved oxygen and temperature (ODO/T) probes, as well as legacy ProODO and ProOBOD probes. Combining an extremely durable, user-friendly display with the most advanced DO technology, ProSolo stands alone as the industry’s best dissolved oxygen meter at an exceptionally affordable price.

The ProSolo digital handheld meter with ODO/CT offers exceptional affordability with unmatched durability. The user-friendly display delivers not only the industry’s best DO, temperature, and conductivity data, but also calculated parameters such as salinity, specific conductance, and seawater density.


Dutch market only
Please be informed that we – as a reseller – are only allowed to sell/deliver Xylem/YSI and Xylem/SonTek products to the Dutch market.



  • Highly-accurate ODO® sensor technology with no stirring
  • Rechargeable lithium-ion battery that supports a full day of sampling

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