
Marine water monitoring is required for a number of purposes: the detection of diffuse pollution; to ensure the compliance of construction projects (especially if dredging is involved); for Environmental Impact Assessments and for general marine biology investigations/research.
Have a question about using your equipment in Coastal & Oceans? Ask our application specialists!
Need service for your system? Here you'll find authorized service centers and instructions on how to get the service you need.
We have a large pool of water quality and hydrology instruments available to you for rental.

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EXO 1 Water Quality Multiparameter Sonde YSI has used its long experience in water quality monitoring to develop the ultimate multiparameter sondes for challenging marine and freshwater conditions. Users can choose the new EXO1 sonde, with ports for 4 sensors, or the new EXO2 sonde, with 6 ports and a central anti-fouling wiper. |
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EXO 2 Water Quality Multiparameter Sonde Reduce operating costs whilst collecting the best water quality data using the award winning YSI EXO sonde platform |
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The Storm 3 is the next generation browser based datalogger / telemetry solution allowing for simple connection of environmental monitoring equipment to the web or desktop. |
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The YSI Castaway is the worlds first CTD to provide instantaneous profiles for temperature, conductivity, salinity, depth and speed down to 100m. |
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SOOGUARD Environmental Shipborne Data Collection System The Aanderaa SOOGUARD FerryBox system provides environmental water quality monitoring from ships of opportunity using Aanderaa Smart Sensors and the SmartGuard data logger. The system is designed specifically to offer a low maintenance, low operating cost system while providing high quality data. |
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The Aanderaa RCM Blue is a self contained single point Doppler current meter with Bluetooth for communications and data retrieval. With a large battery and memory capacity, the instrument can be deployed for in excess of one year. |
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PeliNet is a portable, instantly deployable, telemetry solution for short term and emergency monitoring applications. PeliNet is based on YSI's Econet system allowing the user to make instant, meaningful decisions without the need for additional costly resources or time-consuming trips to the field. |
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Small buoy for easy access to water quality data. Quickly deployed environmental monitoring buoy with telemetry and data acquisition electronics. This buoy is ideal for project-based deployments; it simplifies installation by eliminating the need for a crane, divers and large service equipment. |
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YSI's Anti-fouling Kits, designed for 6-Series Sondes, are reliable and affordable ways to significantly lengthen deployment times, reduce operating costs, and ensure high-quality data for continuously deployed monitoring systems. |
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Photosynthetically Active Radiation (PAR) PAR measures irradiance -- the amount of sunlight or ambient light that diffuses through water compared to surface light, PAR focuses on the dynamics of the photic zone, typically 1 - 5 meters below the surface and leads to an understanding of photosynthesis, toxic algae blooms and eutrophication (nutrient loading) |
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The YSI 650 is a field rugged display / datalogger capable of communicating with any YSI 6-Series multiparameter instrument |
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The Argonaut MD (Mooring Deployment) acoustic doppler current meter is the instrument of choice in the oceanographic community. |
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Its now possible to expand your water quality monitoring to include hydrocarbons or oil with the YSI Sensor Adapter. The YSI Sensor Adapter expands water quality monitoring to include third-party analog output sensors allowing the 6 Series sondes to measure hydrocarbons and other parameters. |
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Photosynthetically Active Radiation (PAR)
Water Quality Sampling Catalogue
Monitoring Systems that Deliver Better Results from YSI Integrated Systems
Undersea exploration with EXO and Castaway CTD
Long term deployments in estuarine conditions with EXO anti-fouling
Palm-sized CastAway-CTD Reveals Complex Dynamics in a Small Harbor
Using-Real-time-Telemetry-for-Ecological-Monitoring-of-Coastal-Wetlands
Anti-Fouling Kits Significantly Reduce Fouling
Sending Ferries to Uncover the Secrets of the Sea
Pontoon-Mounted Autonomous Monitoring System Keeps Constant Watch on Harmful Algal Blooms
Dubai Municipality Utilizes YSI Real-time Water Quality Monitoring Instrumentation
Extended Deployment Appeals to Users Worldwide
Integrating Coral Reef Ecosystem Management with Watershed-based Activities
Sustainable Seas Expedition Includes YSI 6600 Sonde