WTW - a xylem brand  

Offers robust analysis products for the measurement of various parameters in lab, field and on-line applications serving the environmental, water and wastewater, food and beverage, educational, pharmaceutical, clinical, others.


Offers robust analysis products for the measurement of pH, dissolved oxygen, conductivity, total dissolved solids and specific ions in lab, field and on-line applications serving the environmental, water and wastewater, food and beverage, educational, pharmaceutical, clinical, research and chemical/petrochemical industries.

Wireless innovation

WTW have recently released innovative new wireless IDS Sensors. No cables, full flexibility, space saving, and with absolutely secure data transmission: The new IDS system from WTW is now available with universal wireless modules for IDS plug head sensors for pH/ORP, conductivity, dissolved oxygen, and turbidity. WTW has reengineered its IDS meter portfolio and extended the IDS electrode portfolio with new pH/ORP electrodes with plug heads. Up to three parameters can be measured and stored simultaneously (depending on the meter). With state-of-the art power saving technology for long operation times and a range of up to 10m, applications in the laboratory, in a plant, or in the field could easily be solved.

Website: www.wtw.com
  • IQ SensorNet
  • Benchtop instruments
  • Sensors
  • OxiTop® BOD measurement
  • Portable meters

WTW IQ SensorNet 181

  • Low-cost alternative to analog measuring points
  • Matching digital IQ fixed cable sensors for pH/ORP, conductivity, O2 and turbidity
  • Stable, robust and proven measuring technology

MCERTS certified


WTW IQ SensorNet 182

  • up to 4 digital IQ sensors can be connected
  • Analogue version with up to 5 power outputs and 6 relays
  • Digital outputs PROFIBUS or MODBUS RTU available as options

MCERTS certified

Our latest instrument, the WTW 282 has superseeded this product.  Click here for the lastet information


WTW IQ SensorNet 282

Controller for small and mid-sized wastewater treatment plants including USB-interface and internal data logger – up to 4 sensors, all parameters, available anytime.

  • All parameters available (O2, NH4, NO3, COD, PO4, sludge level)
  • USB-interface and internal data logger by default
  • Convenient and available anytime via Ethernet-interface

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.

MCERTS certified.

Alt: WTW photoLab® 7600 UV-VIS

WTW photoLab® 7000 Series Spectrophotometer

  • Menu-guided operation
  • Opt-RF, Optical Reagent-Free measurement, for COD, NO3, NO2 in municipal wastewater final effluent
  • Multi-layer AQA
  • Application support
  • Comprehensive programming opportunities
  • Colour Applications

WTW Inolab 9430

WTW inoLab® pH Benchtop Meters

The inoLab® family: Advanced measuring technology offers new functions including automatic AutoRead or CMC (Continuous Measurement Control) making measurements more convenient and reliable than ever.
The user interface, large display and keypad with tactile feedback provide an exceptional user experience and error-free operation.
All benchtop meters are available in application oriented sets including sensors and accessories.

WTW 9310

WTW inoLab® IDS - Benchtop

Connect digital IDS sensors to the Inolab for the measurement of pH, ORP, conductivity, and DO/BOD.

  • Uncompromised measuring accuracy
  • Digital sensor recognition
  • Smart sensor evaluation


WTW FDO Online Dissolved Oxygen Sensor

Optical and electro-chemical sensors for the measurement of dissolved oxygen with analog monitors or the modular and flexible IQ Sensor Net

WTW VisoTurb®

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.

SensoLyt® pH/ORP sensors

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 Varion sensor

WTW VARiON Plus 700 IQ

The VARiON probe is used within the IQ SensorNet system and can therefore be networked with other probes and parameters for a complete process monitoring and control system. It can measure, report and control off of the ammonium and/or nitrate measurements with automatic compensation for potassium (for ammonium) or chloride (for nitrate).


WTW 700 IQ IFL Sensor

The IFL is an ultrasonic, interface level measurement sensor for the IQ SensorNet system. During the wastewater treatment process, the measurement of the interface level between liquids is of vital importance for optimal performance and trouble-free operation. The 700 IQ IFL provides continuous data to help operational efficiency improvement decisions. Simply connect it to the IQ SensorNet system.


WTW BOD self check measurement OxiTop®

OxiTop® systems for BOD or other depletion / respiration applications

  • Complete packages ready to use
  • Simple, flexible, secure, compliant, customisable and scalable
  • Mercury-free pressure measurement

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.


WTW Portable colorimeter pHotoFlex® STD

  • Intuitive and easy operation
  • Captive adapter for two cuvette sizes
  • Robust and waterproof