WTW - a Xylem brand

Xylem Analytics Australia announces the introduction of the WTW Online range of Water Quality monitoring equipment to our product offering.

WTW Online offers a comprehensive range of Water Quality parameters from the standard Physio-Chemical through to the Optical determination of Carbon and Nitrogen parameters to the range of Chemical Analysers for Nutrient based determination.

The WTW sensor range has some unique advantages from a built-in acoustic cleaning system to the versatility in offering a range of Explosive rated sensors for Industrial and Confined Space operation.

Robust field bus technology allows the sensors to be connected to a master unit via direct connection or radio link. Master systems than provide direct integration into existing SCADA systems or can act as a central data collection portal for an extended network of sensors.

The reliability, operational safety and versatility of proven WTW measurement systems and analysers have established WTW products as a global industry standard.


  • WTW Products
SensoLyt® pH/ORP sensors

WTW SensoLyt® pH / ORP Sensors

For continuous pH/ORP measurement, especially under difficult conditions

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 BOD self check measurement OxiTop®

WTW OxiTop® BOD self check measurement

Measuring heads for respiration/biogas determination

WTW OxiTop® systems are easy-to-use meters for BOD for self-monitoring. OxiTop®-C measuring systems can execute anaerobic and aerobic examinations across the entire spectrum of biodegradability and evaluate them on the computer


WTW MPP IDS – Multi-parameter Depth Sondes within IDS System

MPP 910 IDS + MPP 930 IDS

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.


WTW Online Monitoring System

IQ Sensor Net - The ideal modular online measuring system for small, medium and large wastewater treatment systems

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 2020 XT

WTW IQ SensorNet 2020 XT Controller

Improve Operational Efficiency with Continuous Data


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

WTW CarboVis Spectral Sensors

Chemical-free measurement of COD / TOC / DOC / BOD / SAC / UVT directly in the process.

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).



SAC & UVT measurement: Without servicing - Without wiper

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®

WTW VisoTurb® 700 IQ & ViSolid® 700 IQ Sensors

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.

Online D.O. Measurement

WTW Online Dissolved Oxygen (DO) Measurement

Water/Wastewater Treatment, Water Pollution Control, Fish farming/Aquaculture

WTW has been continuously designing, manufacturing and satisfying the demands for reliable dissolved oxygen measurements with the most advanced online systems available anywhere.

WTW P700 Orthophosphate Analyser

WTW P 700 Orthophosphate Analyser

Phosphate elimination analyser - easy to integrate in new or existing IQ systems.

P700 has now been replaced by our new WTW Alyza PO4 Analyzer.


WTW FDO 700 Digital IQ Sensors for Dissolved Oxygen

Online digital IQ sensor for connection to the IQ Sensor Net

Calibration-free, reliable, DIN compliant - the optical FDO® oxygen sensors for the IQ Sensor Net to regulate biological cleaning steps

  • Calibration and flow free
  • Insensitive to air bubbles
  • Low usage costs
WTW VARiON Plus 700 IQ

WTW VARiON® Plus 700 IQ Ammonium and Nitrate Sensor

Digital ISE combination sensor for ammonium and nitrate

Reagent free, ion selective measurement of ammonium and nitrate with automatic compensation of potassium/chloride with the VARiON® Plus 700 IQ.
These especially stable electrodes ensure long operation times and a simple cleaning method. To measure, simply install the respective electrode into the IQ Sensor Net - everything will take place automatically. 

WTW IQ SensorNet Nitravis 700 Series

WTW IQ SensorNet NitraVis® 700 Series Nitrate Sensors

Optical Nitrate probe for IQ SensorNet systems

The NitraVis® is a reagentless, optical-based spectrophotometer built into a rugged, corrosion-resistant field probe for the IQ SensorNet system. The NitraVis probe scans 256 wavelengths per measurement between 200 and 720 nm to provide the most accurate Nitrate and TSS measurements with precise compensation for interferences such as turbidity.

WTW IQ Sensor Net DIQ/S 282/284 Controller

WTW IQ Sensor Net DIQ/S 282/284 Controller

Controller for small and mid-sized wastewater treatment plants

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.

WTW IQ SensorNet 181 Digital Controller

WTW IQ SensorNet 181 Digital Controller

Digital controller DIQ/S 181 for pH,dissolved oxygen, turbidity or conductivity

The WTW IQ SensorNet 181 – the digital and cost-efficient single parameter measuring point with proven IQ Sensor Net technology and matching fixed cable sensors

WTW Alyza IQ analyzer PO4 - Xylem Australia

WTW IQ Sensor Net Alyza Analyzer PO4

Orthophosphate analyzer for the WTW IQ SENSOR NET

Meet Alyza! The perfect solution to support phosphate elimination as well as phosphate load monitoring - on-site analyzer for orthophosphate measurement in the IQ SENSOR NET

WTW Turb 430 IR / Turb 430 T

WTW Turb 430 IR / Turb 430 T Turbidity Meter

Portable nephelometric with highest precision according to DIN ISO / US EPA for water analytics, quality control and process monitoring

The turbidity meters Turb® 430 IR acc. to DIN ISO 27027 and Turb® 430 T acc. to US EPA 180.1 meet the requirements of the nephelometric measurement at 90° stray light for drinking water with highest precision, especially in the range < 1 NTU. The measuring range comprises 0-1100 NTU/FNU with automatic measuring range switching and is therefore suitable for water analysis as well as quality control, such as gasoline, cell cultures, as well as in the food and beverage industries.

WTW Portable colorimeter pHotoFlex STD

WTW Portable colorimeter pHotoFlex STD

pHotoFlex® STD: portable LED photometer for environmental monitoring and extensive water and routine analytics in (mobile) service labs

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. With more than 180 programs for standard parameters and coloration as well as a multitude of test kits - from lot-certified cuvettes to economic powder reagents, it is suitable for monitoring by health offices via environmental monitoring all the way to service labs.

WTW IQ SensorNet Alyza Analyzer NH4

WTW IQ SensorNet Alyza Analyzer NH4

IQ SensorNet Analyzer for Ammonium provides accurate, reliable measurements for process control

The IQ Analyzer features a revolutionary MultiValve that dramatically reduces reagent use and maintenance requirements.

WTW Portable Samplers

WTW Portable Samplers for Wastewater

Mobile sampling in safe hands

The lightweight design and the compact housing of the PB-M ensure a unique carrying comfort. The modern operating structure and vacuum pump system allow a carefree sampling process.

WTW Sampler for Wall Mounting

WTW Sampler for Wall Mounting for Wastewater

Step by step to the sum parameter

With its large and quickly changeable containers, the PB-W is ideal for simple applications. The compact and lightweight housing assures fast mounting. Let's get ready for standardized sampling.

WTW DPD Chlor-Analyzer Chlorine 3017M

WTW DPD Chlor-Analyzer Chlorine 3017M

Chlorine 3017M - photometric analyzer with large measuring range and a high resolution for free and total chlorine with the DPD method according to the ISO and US EPA.