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YSI 9300 + 9500 Photometer
The YSI 9300 and YSI 9500 are economical photometers in small packages for any application. These portable photometers allow you to easily take readings directly in the field for 100+ parameters.

Global Water - WS755 Wastewater, Stormwater Sampler
Our new WS755 improved two-bottle wastewater/stormwater samplers combine all the features you need to meet a wide variety of sampling requirements, including those for stormwater, industrial discharge, water and wastewater treatment, waste collection systems, and rivers and streams.

Global Water - WQS Water Quality Sampling System
Global Water has created a unique water quality sampling system. This system includes an easy to use lightweight triggered composite water sampler, a water quality process controller with relay outputs, and a data recorder that is Windows compatible. The compact water quality sampler system is portable for field installation and fully customizable to meet your needs.

YSI ProODO - Dissolved Oxygen Meter
The ProSolo handheld is the direct replacement to the ProODO Optical Dissolved Oxygen handheld, and is fully compatible with ProODO cables and ProOBOD probes. The ProODO handheld will be discontinued on Dec. 31, 2018.
The YSI PRO ODO is the best handheld optical dissolved oxygen instrument on the market. The handheld dissolved oxygen meter provides extreme durability for measuring DO with optical, luminescent based technology for both the field and lab.

YSI Professional Plus (Pro Plus) Multiparameter Meter
The YSI Professional Plus (Pro 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.

YSI ProDSS - Digital Sampling System
The YSI ProDSS (digital sampling system) handheld multiparameter meter provides extreme flexibility for the measurement of a variety of combinations for dissolved oxygen, turbidity, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH/ORP combination, ammonium (ammonia), nitrate, chloride and temperature along with depth.

YSI Pro30 Conductivity, Salinity Meter
The Pro30 provides everything you need in a handheld meter that measures salinity, conductivity, specific conductance, total dissolved solids, and temperature. Rugged, simple and reliable.

YSI Pro20 Dissolved Oxygen Meter
The Pro20 provides everything you need in a handheld dissolved oxygen meter. Ruggedness, simplicity and reliability are the cornerstones of the instrument's design.

YSI Pro10 pH / ORP Meter
The Pro10 provides everything you need in a handheld meter that measures temperature along with either pH or ORP (redox). Rugged, simple and reliable. Measure pH or ORP, and temperature.

YSI Pro1020
The Pro1020 provides everything you need in a handheld meter that measures dissolved oxygen and temperature along with either pH or ORP (redox). Rugged, simple and reliable. Measure pH or ORP, dissolved oxygen, and temperature.

YSI Pro1030
The Pro1030 provides everything you need in a handheld meter that measures pH or ORP (redox) along with conductivity. Rugged, simple and reliable. Measure pH or ORP, salinity, conductivity, specific conductance, TDS, and temperature.

YSI Pro2030
The ideal replacement for the discontinued YSI Model 85. The Pro2030 provides everything you need in a handheld dissolved oxygen meter that automatically compensates for changes in salinity values. Rugged, simple and reliable. Measure DO, salinity, conductivity, specific conductance, TDS, barometric pressure and temperature.

YSI EcoSense DO200A Dissolved Oxygen Meter Kit
The DO200A is part of the EcoSense® family of products. The DO200A dissolved oxygen instrument offers fast dissolved oxygen response times in wastewater, surface water, and aquaculture applications.

OI Analytical Aurora 1030W TOC Analyzer
The Aurora 1030W TOC Analyzer processes aqueous samples for analysis of the total organic carbon (TOC), total inorganic carbon (TIC), and non-purgeable organic carbon (NPOC) content of the samples.

OI Analytical Aurora 1030C TOC Analyzer
Get more from your analysis with the Aurora 1030C TOC Analyzer, an instrument designed to process aqueous samples for the analysis of total organic carbon (TOC) using the high temperature combustion technique. Capable of processing up to 300 samples daily, the Aurora 1030C offers a broad sample scope of 100 ppb to 30,000 ppm.

OI Analytical 1088 Rotary TOC Autosampler
The 1088 Rotary Autosampler is specifically designed to operate with the Aurora 1030W TOC analyzer or Aurora 1030C TOC analyzer. The 1088 autosampler aspirates liquid samples from vials and transfers each sample aliquot to an Aurora 1030 TOC analyzer for analysis. A removable 88-position autosampler tray loads the sample vials for fully automated, unattended operation.

OI Analytical 1030S TOC Solids Analysis Module
The 1030S Solids Module is a sample preparation module enabling the analysis of the total organic carbon (TOC) or total carbon (TC) content in solid materials. The 1030S module is operated in conjunction with an Aurora 1030W or 1030C TOC analyzer.

OI Analytical Flow Solution™ FS 3700 Automated Chemistry Analyzer
The FS 3700 Automated Chemistry Analyzer is an advanced continuous flow analyzer designed to improve laboratory productivity by automating wet chemistry test procedures.

OI Analytical Eclipse 4660 Purge-and-Trap Sample Concentrator
The Eclipse 4660 Purge-and-Trap Sample Concentrator processes samples for analysis of volatile organic compounds (VOCs) by gas chromatography (GC) or gas chromatography/mass spectrometry (GC/MS). Innovative, patented components within the Eclipse significantly improve sample processing steps of the purge-and-trap technique.

OI Analytical 4100 Water/Soil Sample Processor
The OI Analytical 4100 Water / Soil Sample Processor automates the handling and processing of samples in 40-mL VOA vials for purge-and-trap analysis of volatile organic compounds (VOCs) in accordance with U.S. EPA methods. The 4100 efficiently processes up to 100 drinking water, wastewater, or soil samples and operates with a single or dual Eclipse 4660 purge-and-trap instruments.

OI Analytical 4551A Purge-and-Trap Water Autosampler
The M4551A Purge-and-Trap Water Autosampler achieves results by automating VOC analysis of up to 51 samples. Vertical docking of the autosampler to the Eclipse 4660 Sample Concentrator means no extra benchspace is used. The removable, lightweight sample carousel makes sample loading and unloading easy, while its spiral design optimizes septum-piercing accuracy. With its proven, reliable sample handling system, the Model 4551A gets the job done, sample after sample.

OI Analytical LV-20 Standards Addition Module
The LV-20 Standards Addition Module is an option for the 4551A Purge-and-Trap Autosampler that injects programmed volumes (1, 2, 5, 10, or 20 microliters) of internal standard, surrogate or matrix spike standards to improve the accuracy and precision of GC-GC-MS analyses.

OI Analytical Pulsed Flame Photometric Detector (PFPD)
OI Analytical's patented* Model 5380 Pulsed Flame Photometric Detector (PFPD) represents the latest advance in flame photometric detector design, optimizing selective detection of sulfur, phosphorus, and 26 other compounds.

OI Analytical 9210p On-line TOC Analyzer
The OI Analytical 9210p On-line Total Organic Carbon (TOC) Analyzer is designed to continuously monitor TOC levels in process water streams. The 9210p uses proven heated persulfate oxidation technology for accurate, dependable operation and regulatory compliance. Virtually all organic compounds dissolved in water can be oxidized with high efficiency by this technique.

YSI EXO1 Multiparameter Sonde
Capturing accurate data in fresh water, ground water and marine aquatic environments is easy with the versatile multiparameter EXO1 sonde. Ideal for estuarine, surface water or ground water applications.
Read our blog: How to Disinfect (COVID-19) Your Field Water Quality Equipment

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.
Read our blog: How to Disinfect (COVID-19) Your Field Water Quality Equipment

WTW MPP IDS – Multi-parameter Depth Sondes within IDS System
Up-to-date digital depth measurement with the WTW IDS system: A built-in barometric pressure and temperature compensated depth sensor combines dissolved oxygen, pH or ORP and conductivity measurements with accurate depth readings.

MJK MagFlux® Flowmeters
MagFlux® Flowmeters are developed for measurements in all types of conductive liquids, including measurement of flow in drinking water, wastewater, sludge and process water. MagFlux Flowmeters are manufactured with carbon steel and stainless steel for flange or wafer connections and lining in hard or soft rubber and PTFE/PFA.

SonTek-IQ® Series
Ideal for monitoring flows in canals, culverts, pipes, and natural streams, the SonTek-IQ starts with a custom flow algorithm derived from hundreds of field measurements. Four velocity beams profile water velocity in 3-D - both vertically and horizontally - ensuring complete coverage of the velocity field. The built-in pressure sensor and vertical acoustic beam work in tandem to measure water level. Simply input the channel geometry using the intuitive SonTek-IQ software and you are outputting flow data in minutes.

SonTek FlowTracker® Handheld-ADV®
NEW SonTek FlowTracker2 IS OUT NOW!
The FlowTracker Handheld-ADV® (Acoustic Doppler Velocimeter) measures 2D or 3D currents, attaches easily to wading rods, and features an automatic discharge computation using a variety of international methods, including ISO and USGS standards. The FlowTracker also features SonTek's exclusive "SmartQC" which involves a series of built-in data quality checks, so you know your data is right. At the end of the data run, just press a button and the FlowTracker calculates the discharge for you!

SonTek®-SL Series
NEW SL1500/3000 3G MODELS! The SonTek-SL has two new (3G) models turbo-charged by our proprietary SmartPulseHD®, the featured accessories, mounting options, software, and a variety of integration formats ensure it fits your application.

Global Water Flow Probe - FP111, FP211, FP311
The Global Water Flow Probe is a highly accurate water velocity instrument for measuring flows in open channels and partially filled pipes.

MJK Shuttle® Ultrasonic Level Transmitter
With MJK cabled sensors, it is easy to position the transmitter with the display, where it can be useful, and the large display allows viewing from a distance. Tne one-step measurement start-up procedure is easy to follow and easy to modify the set-up of all functions, controls and signal management features.

MJK Expert™ Hydrostatic Level Series
MJK offers a full series of water level transmitters designed for immersion in open tanks, wet-wells, ground water and reservoirs. The water level transmitters are designed for measurement under rough conditions in all water and wastewater applications with large concentrations of sludge and suspended solids.

Global Water WL16 Water Level Loggers
The WL16, Water Level Logger, is a datalogger and submersible pressure transducer combination designed for remote monitoring and recording of water level or pressure data. The water level logger can record over 81,000 readings and has four unique recording options, fast (10 samples per second), programmable interval (1 second to multiple years), logarithmic, and exception. Multiple depth ranges are available from 3 to 500 feet of water level change. A 25 ft vented cable is standard on all water level loggers, and optional cable lengths are available from the factory up to 2000 ft.

YSI WaterLOG - Water Level Radar Series (H-3611/12/13)
The Radar is a non-contact water level sensor, perfect for just about every tough to reach site. It contains a built in LCD display for simple monitoring, setup and maintenance. It's interface is compatible with any data logger that is SDI-12 compliant and you can set the sensor to measure in feet, meters or any other engineering unit you want.

YSI WaterLOG Nile Water Level Radar Series
NEW Nile Series 502/504/517 models! Designed for non-contact water level measurement. The WaterLOG Nile Series (502/504/517) combines high accuracy with an out-of-the-box measurement range of up to 70 m. The rugged, innovative design was inspired for installation on a bridge or other structure over the water—making this series ideal for sites that may have ice or other instrument-damaging debris. Its reliable interface and simple SDI-12 communication ensure seamless integration with current water monitoring stations. With three models to choose from, the Nile Series is sure to meet your water monitoring needs.

Global Water WL430 Sewage Lift Station Wastewater Level Sensor
The Sewage Lift Station Wastewater Level Sensor's "Steelcage" design offers the highest reliability in level measurement for severe high solids environments such as sewage, lift stations, storm canals, wet wells and slurry tanks.

Global Water WL400 Vented Water Level Sensor
Global Water's WL400 Water Level Sensor provides highly accurate water level measurement for a wide variety of applications, including those in severe environments. The submersible pressure transducers have a dynamic temperature compensation system, enabling high accuracy measurements over a wide temperature range. The water level sensor is easily adapted to all dataloggers, telemetry, monitoring equipment, and displays.

WTW SensoLyt® pH / ORP Sensors
For continuous pH/ORP measurement, especially under the difficult conditions very often found in sewage treatment facilities, very high demands are made concerning the reliability and operating safety of the systems employed.

WTW Online Monitoring System
The IQ Sensor Net system is the most flexible, digitally based online system that provides from 1 to 20 measuring points. The module based system allows you to "grow" your system as your conitnuous water quality monitoring needs change.
For the measuring and control of wastewater, WTW offers the world's most complete line of pH/ORP, D.O., Conductivity, Nitrogen, Carbon, Phosphate, and unique self-cleaning Turbidity instrumentation, as well as comprehensive accessories.

WTW IQ SensorNet 2020 XT Controller
DISCONTINUED - PLEASE REFER TO WTW Terminal/controller MIQ/TC 2020 3G
With an easily scalable solution, the 2020 XT 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.

WTW CarboVis Spectral Sensors
The CarboVis® is a reagentless, optical-based spectrophotometer built into a rugged, corrosion-resistant field probe for the IQ SensorNet system. The CarboVis can report up to 5 parameters including: COD (total and soluble), BOD, UVT-254, TOC, DOC, SAC (total and soluble) and TSS (optional).

WTW IQ Sensor Net DIQ/S 282/284 Controller
The new WTW DIQ/S 282/284 (2 and 4 channel) controller replaces the DIQ/S 182 from June 2016
The new controller is for small and mid-sized wastewater treatment plants and includes a USB-interface with an internal data logger - up to 4 sensors can be connected and 20 parameters measured siumultaneously.

MJK MagFlux® Flowmeters
MagFlux® Flowmeters are developed for measurements in all types of conductive liquids, including measurement of flow in drinking water, wastewater, sludge and process water. MagFlux Flowmeters are manufactured with carbon steel and stainless steel for flange or wafer connections and lining in hard or soft rubber and PTFE/PFA.

WTW SensoLyt® pH / ORP Sensors
For continuous pH/ORP measurement, especially under the difficult conditions very often found in sewage treatment facilities, very high demands are made concerning the reliability and operating safety of the systems employed.

WTW Online Monitoring System
The IQ Sensor Net system is the most flexible, digitally based online system that provides from 1 to 20 measuring points. The module based system allows you to "grow" your system as your conitnuous water quality monitoring needs change.
For the measuring and control of wastewater, WTW offers the world's most complete line of pH/ORP, D.O., Conductivity, Nitrogen, Carbon, Phosphate, and unique self-cleaning Turbidity instrumentation, as well as comprehensive accessories.

WTW IQ SensorNet 2020 XT Controller
DISCONTINUED - PLEASE REFER TO WTW Terminal/controller MIQ/TC 2020 3G
With an easily scalable solution, the 2020 XT 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.

WTW UV 700 IQ SAC
The SAC sensor measures Spectral Absorption Coefficient (SAC) and UV transmission (UVT) at 254nm for determination of organic loads in water. With the sensor UV 700 IQ SAC this parameter can be detected directly without any chemicals. A reference measurement is performed for compensation of turbidity influences.

WTW VisoTurb® 700 IQ & ViSolid® 700 IQ Sensors
With the VisoTurb® 700 IQ and ViSolid® 700 IQ sensors, WTW presents a family of optical sensors for turbidity and suspended solids measurement. These sensors incorporate a ultrasound cleaning system that guarantees low maintenance and long-term reliability of the sensors. Turbidity measurements in aqueous media with VisoTurb® are carried out nephelometrically in compliance with EN ISO 7027. Solid matter measurement with ViSolid® is performed according to the principle of scattered light measurement.

WTW Online Dissolved Oxygen (DO) Measurement
WTW has been continuously designing, manufacturing and satisfying the demands for reliable dissolved oxygen measurements with the most advanced online systems available anywhere.

OI Analytical 9210p On-line TOC Analyzer
The OI Analytical 9210p On-line Total Organic Carbon (TOC) Analyzer is designed to continuously monitor TOC levels in process water streams. The 9210p uses proven heated persulfate oxidation technology for accurate, dependable operation and regulatory compliance. Virtually all organic compounds dissolved in water can be oxidized with high efficiency by this technique.

WTW IQ Sensor Net DIQ/S 282/284 Controller
The new WTW DIQ/S 282/284 (2 and 4 channel) controller replaces the DIQ/S 182 from June 2016
The new controller is for small and mid-sized wastewater treatment plants and includes a USB-interface with an internal data logger - up to 4 sensors can be connected and 20 parameters measured siumultaneously.
- Catalog: 2019 Wastewater and Drinking Water Catalog
- Brochure: IQ Sensor Net - Continuous Process Monitoring and Control
- Brochure: Nitrogen Measurements
- Brochure: Your perfect partner for ammonium and nitrate measurement - Varion Plus, Ammolyt Plus & Nitralyt Plus
- Brochure: WTW 282/284 Controller
- Xylem Custom Systems + Solutions Brochure
- Brochure: WTW Lab and Field Instrumentation
- Spec Sheet: WTW Electrochemical oxygen sensor
- Spec Sheet: WTW Conductivity sensor for wastewater
- Spec Sheet: WTW pH and ORP measurement for wastewater
- Data Sheet: IQ Sensor Net
- Data Sheet: Non-Contact Radar Surface Velocity Flow Measurement Solution
- Webinar Presentation - Meet Alyza IQ !!
- Flyer: WTW Portable Samplers
- Datasheet: WTW Samplers Datasheet
- Manual: WTW Portable Sampler Manual
- Manual: WTW Sampler for Wall Mounting
- Spec Sheet: WTW Portable Samplers and Samplers for Wall Mounting
- Flyer: WTW Sampler for Wall Mounting
- CustomerLetter-COVID-19 Update-25.03.2020
- Tech Note: Benefits of WTW On-Line Products
- Brochure: Tailor-made to your plant: IQ Sensor Net
- Flyer: WTW IQ Sensor Net - The Range