New Products

Water Quality Monitoring

EXO NitraLED UV Nitrate Sensor

EXO NitraLED UV Nitrate Sensor for Freshwater Environments

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DB600 Data Buoy

All-In-One, Rugged, Remote Monitoring System

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HydroSphere

A Scalable, Collaborative Data Visualization Platform for Water Monitoring

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3017M Colorimetric Chlorine Analyzer

DPD Chlorine Analyzer for Municipal Water

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ProQuatro Multiparameter Meter

Multiparameter Instrument for DO, Conductivity, Salinity, pH, ORP, Ammonium, Nitrate, Chloride, Temperature and more.

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One Team on a Mission

Spanning over 70 years, YSI, a Xylem brand has a customer-focused legacy of developing innovative, environmentally-essential technology. Our customers are more than people who use our instruments - they are climate first responders, environmental stewards, and researchers who are passionate about our world along with scientific integrity.

Learn More About YSI

Why Monitor for Algae

The amount and type of algae can tell you a lot about the health of that system. But first, let’s cover what we’re referring to as algae. In simple terms, algae are photosynthetic organisms like plants. We can separate out the macroalgae, such as the red, brown, and green algae – sometimes referred to as seaweeds. Let’s instead focus on the microalgae, or single-celled algae.

DB600 Data Monitoring Buoy

The DB600 arrives fully integrated and can be deployed by a single person. With it's unique Ai1 telemetry system, high-efficiency solar-based power system, and field-ruggedized buoy, the data buoy, DB600, can be used in any critical application where an ongoing stream of data is paramount. Pair it with YSI's EXO sondes, Aanderaa's single-point current sensor, and HydroSphere data visualization for a world-class monitoring station.

Why Monitor for Dissolved Oxygen

Most aquatic organisms require dissolved oxygen in order to survive, but what exactly is it? Dissolved oxygen, or DO, is just like the oxygen humans use to breathe, but has been dissolved in water. Unlike the bonded molecules of H20, DO refers to the free oxygen that is present in water or other liquids.

Alyza Orthophosphate Analyzer

The Alyza IQ PO4 is an online, cabinet-style analyzer used for continuous monitoring of orthophosphate in a municipal water resource recovery facility. This analyzer is weatherproof and can be deployed anywhere in the wastewater treatment process.

Nutrient Monitoring Will Never Be the Same | NitraLED UV

11/18/2020

YSI is changing nutrient monitoring for water quality forever. This webinar doesn't focus on teaching best practices for water quality monitoring, but focuses on brand new technology...

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Water Blogged 

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Featured Products

ProDSS Multiparameter Water Quality Meter

Digital Sampling System multiparameter​ handheld water quality meter for extreme flexibility. Meter Only.

$1,650.00 - $2,160.00

EXO2 Multiparameter Sonde

Multiparameter Water Quality Sonde with 7 sensor ports (including a central wiper port)

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IQ SensorNet 2020 3G Controller

Modular water quality monitoring system for a complete sensor network that measures up to 20 parameters

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Pontoon Vertical Profiling System

Ideal for Ponds, Lakes, Reservoirs, and Certain Coastal Applications

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ProSolo Digital Water Quality Meter

Optical Dissolved Oxygen, Conductivity, and Salinity Digital Handheld Instrument. Meter Only.

$850.00

2900M Online Monitor & Control System

Two Chemistry Online Monitor & Control System

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MultiLab 4010-3W

Three channel benchtop multiparameter instrument with wireless capability

$1,968.00

HYCAT Autonomous Surface Vehicle

Autonomous Surface Vehicle

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Amazon Bubbler

Self-contained Continuous Flow Bubbler with Fully Integrated Pressure Sensor

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IQ SensorNet Alyza Analyzer PO4

IQ SensorNet Orthophosphate Analyzer

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Do you know a water hero?

Who's Minding the Planet (#WMTP) is more than a tagline, it's a way of doing business. A way we work with scientists, engineers, and other water heroes who live it everyday. We'd love for you to nominate your water hero (even if it's yourself). You determine what constitutes a water hero and who you feel is working to mind the planet and mind our most precious natural resource - water.

Nominate a Water Hero

LOOKING FOR THE BEST INSTRUMENT?

Finding the right handheld water quality meter should be easy. Just take our short quiz and the intuitive product selector will provide you with an immediate recommendation based on your needs! From the single-parameter, analog Pro10 to the multiparameter, all-digital ProDSS, we've got you covered.

Choose the Right Handheld

MEET ALYZA | P-REMOVAL REVOLUTIONIZED!

The Alyza IQ PO4 is an online, cabinet-style analyzer used for continuous monitoring of orthophosphate in a municipal water resource recovery factility. This analyzer is weatherproof and can be deployed anywhere in the wastewater treatment process. Applications include monitoring bio-p removal and monitoring and controlling chemical phosphorus removal.

Meet Alyza

LOOKING TO PERFECT YOUR TITRATIONS?

Get back to basics with Xylem's Titration Handbook:  an  all-encompassing guide to help any laboratory navigate one of the oldest quantitative methods in chemical analysis.

Download the Handbook

HOW WATER QUALITY SENSORS WORK | ON-DEMAND WEBINARS

Our experts dive into the evolution of sensor technology and how they work. In this series, we dive into the following parameters in great detail; algae, turbidity, conductivity, pH & ORP, and dissolved oxygen.

Watch the Webinars

HAVE A QUESTION?

Do you have a support question you want to contact us with? Just  fill out our simple form.

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