YSI Multiparameter instruments are the industry standard for most sampling, profiling and long term monitoring applications. The range includes a number of meters / sensors that are specifically designed to measure the amount of dissolved oxygen and the level of chlorophyll in water. Armed with this technology, you will be able to ensure that any water quality issues are known before it gets too late.

Large Range of Dissolved Oxygen and Chlorophyll Meters & Sensors

With its wide range of sensors, options and accessories, YSI ensures that you will have the right instrument for your specific application. All YSI 6-Series sondes can be used with YSI EcoWatch for Windows software. EcoWatch is communication and data processing software that is fast and easy-to-use. You'll see the whole picture with a single program, obtain statistics easily, merge data files, and run large studies.

For full details on our dissolved oxygen meters click here.

For full details on our chlorophyll sensors click here.

Chlorophyll Sensors and Probes

The YSI 6025 Chlorophyll Sensor Probe expands YSI’s suite of sensors for multiparameter, water quality monitoring applications. The new probe is designed to estimate phytoplankton concentrations by detecting the fluorescence from chlorophyll in situ. The data can be useful in predicting detrimental algae blooms and, indirectly, in determining nutrient loading in environmental applications. The probe features a mechanical self-wiping capability for long-term monitoring.

Dissolved Oxygen Meters

An example is the new YSI 550A dissolved oxygen meter. This features a waterproof, impact-resistant case and innovative field-replaceable DO electrode modules. Measure dissolved oxygen and temperature simultaneously using YSI's proven polargraphic technology for oxygen and YSI Precision thermistors, the world wide standard for accuracy.