Nitrate / Nitrite

Nitrate (NO3-) forms in water when bacteria use dissolved oxygen to oxidize ammonium. Nitrate is mobile and may seep into streams, lakes and estuaries from ground water enriched by animal or human wastes or commercial fertilizers. High concentrations of nitrate can enhance the growth of algae and aquatic plants.

The Xylem YSI Nitrate Sensor consists of a silver/silver chloride wire electrode in a custom filling solution. The internal solution is separated from the sample medium by a polymer membrane, which selectively interacts with nitrate ions.

  • Handheld
  • Sonde
  • Sensor
  • Benchtop
  • System & Online
ysi-prodss

YSI ProDSS - Digital Sampling System

The YSI ProDSS - Digital Sampling System - is the ultimate water quality field instrument for sampling and profiling. With the ProDSS, we have answered our customer's demands to produce a truly rugged, reliable and smart multiparameter handheld instrument.

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YSI Professional Plus Multiparameter Meter

The YSI Professional Plus handheld multiparameter meter provides extreme flexibility for the measurement of a variety of parameters such as DO, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH/ORP combination, ammonium (ammonia), nitrate, chloride and temperature.

WTW MultiLine® IDS

WTW MultiLine® IDS

The new multi-parameter systems with intelligent, digital sensors for pH, dissolved oxygen (DO) and conductivity measurement revolutionize multi-parameter measurement:
The signal processing is completely located in the sensor, and the measuring signal is transmitted to the meter without interference and in a clearly identifiable manner via thin, highstrength cables. A wide range of sensors are available for virtually every application.

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WTW Portable colorimeter pHotoFlex® STD

The portable pHotoFlex® STD with energy-efficient LED optics is equipped with 6 wavelengths and a foldable adapter for various applications with 16 mm and 28 mm cuvettes, for even the smallest concentrations.

YSI EXO2 multiparamter water quality instrument

YSI EXO2 Multiparameter Sonde

The EXO advanced water quality monitoring platform includes the versatile multiparameter EXO2 sonde for oceanographic, estuarine, or surface water applications. Collect data to 250m with the advanced EXO2 sonde – contains six replaceable 'smart' sensors and a central wiper to clean biofouling.

exo1

YSI EXO1 Multiparameter Sonde

Capturing accurate data in fresh water, ground water and marine aquatic environments is easy with . The versatile multiparameter EXO1 sonde is ideal for estuarine, surface water, or ground water applications.

Instrument Only. Cables, probes/sensors, and accessories sold separately - please see the "Accessories" tab for details.

EXO 3 multiparameter sonde

YSI EXO3 Multiparameter Sonde

Offering the greatest value of any sonde available in the market, EXO3 combines the maneuverability of EXO1 with the powerful antifouling wiper of the EXO2. EXO3 is a purpose-built sonde for monitoring major water quality parameters, including: pH, conductivity, temperature, turbidity and dissolved oxygen.

WTW CarboVis Spectral Sensors

WTW CarboVis Spectral Sensors

The chemical-free spectral measurement allows a precise determination of the COD and nitrate level.
Whether influent, biological tank or effluent, the self-cleaning sensors CarboVis provides:

  • High measurement reliability
  • Low operating costs
  • Simple handling
  • Maximum durability
Alt: WTW photoLab® 7600 UV-VIS

WTW photoLab® 7000 Series Spectrophotometer

The photoLab® 7000 series of spectrophotometers combine latest optical technology with digital processing to provide users with an efficient and effective means of gathering spectrophotometric data in chemical, pharmaceutical, food, beverage and especially environmental applications.   Special software features include up to 200 industry standard scales/methods and the unique OptRF feature for determining nitrate and nitrate without the need for reagents. Additionally, photoLab Data software expands its capability by displaying results in industry standard color scales including CIE, EBC, ASTM, ICUMSA and so on.

WTW inoLab® Multi 9430 IDS

WTW inoLab® Laboratory Multi-parameter Benchtop Meters

Application oriented benchtop sets for multiple parameter monitoring: pH, mV, ISE, saturation, concentration, partial pressure, conductivity, special resistance, salinity, TDS, temperature

Cutting edge technology from WTW for demanding laboratory applications. Two digital inoLab® multi-parameter instruments for IDS sensors for parallel measuring of one identical or varying parameters. Up to three sensors (inoLab® Multi 9430 IDS) can be connected. A large glass shield protects the graphic display and supports the presentation of the measuring values and recognition of important information. The innovative and antibacterial keypad helps to protect against microbiological contamination. The solid zinc die-casting lower case gives the meters a safe standing and also protection from the environment. As a special feature, both models can be upgraded with an additional module for conventional pH measurement.

WTW Inolab pH/Ion 7320

WTW InoLab® pH/Ion 7320

Precise pH/ISE benchtop meter with enhanced ISE methods for concentration measurement with ion selective electrodes

  • Simultaneous measurements of pH, ion concentration or ORP
  • Flexible and convenient data transfer
  • Visualization of the optimum measuring range supports correct measurements (CMC function)
wtw-lab-photoflex

WTW Portable colorimeter pHotoFlex® STD

The portable pHotoFlex® STD with energy-efficient LED optics is equipped with 6 wavelengths and a foldable adapter for various applications with 16 mm and 28 mm cuvettes, for even the smallest concentrations.

Multiparameter water quality verticle profiler

YSI 6951 Pontoon - Vertical Profiling System

The YSI 6951 Pontoon Vertical Profiling System offers user-programmable sample intervals, redundant error recovery logic that detects unexpected activity and recovers automatically, and is compatible with all YSI EXO and 6-Series sondes equipped with depth.

2020 3G family

WTW IQ SensorNet 2020 3G Controller

With an easily scalable solution, the 2020 3G allows for the connection of up to 20 sensors. This modular plug-and-play system allows you to monitor the water quality in your wastewater system continuously and accurately.

Buoy - Vertical Profiling System

YSI 6952 Buoy - Vertical Profiling System

The YSI 6952 Buoy - Vertical Profiling System offers user-programmable sample intervals, redundant error recovery logic that detects unexpected activity and recovers automatically, and is compatible with all YSI EXO and 6-Series sondes equipped with depth.

YSI HYCAT

Autonomous Surface Vehicle - offering remote water quality, side scan sonar, bathymetry, water velocity and depth measurement