High quality laboratory process and field instrumentation from WTW, a division of Xylem Analytics

We offer the full range of WTW measuring devices for water analysis.
Their reliability, operational safety and versatility make these products a worldwide industry standard.

Instrumentation for Continuous Process Monitoring

IQ Sensor Net


Measuring system for every wastewater treatment plant for up to 20 parameters, including COD

Digital IQ Sensors

Digital IQ sensors

For monitoring of ph/ORP, conductivity, O2 or turbidity


Analog Instruments

Analog Instruments

For monitoring the parameters pH, redox, conductivity, turbidity, chlorine and dissolved oxygen


Chlorine Analyser

Chlorine 2017M

Analyzer to monitor chlorine according to DPD


Turbo PLUS 2000

Turb PLUS 2000

Analyzer to monitor turbidity in drinking water with ultrasonic cleaning

IQ sensor


Sensor for COD

Reagent-free. Selection Guide for IQ Sensor Net Sensors please see below


Analog Instruments

Sludge level sensor

IFL 700 IQ

Sludge level measurement with maintenance free cleaning system and intelligent signal processing


Instrumentation for Laboratory Processes


photoLab ® 7000 Series

Spectrophotometers for routine and spectral analysis from 190-1100 nm


pHotoFlex ® Series

Portable multiparameter LED colorimeter (optional model with Turbidity (NTU) measurement as well: stand alone and field sets


Turbidimeter Turb® 750 T

Turb ® 750 Series

Turbidimeters for standard-compliant and high-precision measurement results with infrared LED or tungsten filament lamp


Respirometric BOD Measuring system OxiTop

Respirometric BOD System OxiTop®-i

OxiTop®-i is the perfect system for respirometric self-check BOD between 1 and 7 days in municipal waste water treatment plants. Menu-guided with direct display of BOD in mg/l




For photometric digestion in 16 mm round vials

Field instruments

Multiparameter deep sonde

Multiparameter deep sonde

For monitoring of depth, pH/ORP, conductivity, O2 or turbidity

Turb 430

Turb ® 430

Turbidity measurement according to Pharmacopeia


Digital IDS portable meters

Digital IDS portable meters

Robust, waterproof, digital portable multiparameter-instruments for IDS sensors: MultiLine ® IDS (wireless ready), HandyLab 200 and 680


IDS Sensors

IDS Sensors for all applications

Reliable digital sensors with built-in identification and digital signal transfer


Multiparameter deep sonde

Portable meters for analog sensors

Robust and waterproof portable meters for analogue sensors, ProfiLine and HandyLab

PH Electrodes

pH Electrodes

For all applications – digital and analog: SenTix®, BlueLine, ScienceLine


Conductivity Cells

Conductivity Cells

Trace measurement, measurement of process samples – digital and analog: The right cell for each application


Additional products available on request

please contact us for your requirements.

WTW - a xylem brand
Bruno Steiner