SOCOTEC, formerly IETG, have one of the UK’s largest fleets of YSI multi-parameter sondes available for hire. All our sondes come fully calibrated and ready for deployment into your desired application.
YSI EXO3 Multi-Parameter Water Quality Sonde
Water Quality Sonde Hire
SOCOTEC own a large fleet YSI EXO3 sondes. The EXO3 is a purpose-built sonde for monitoring major water quality parameters, including: pH, conductivity, temperature, turbidity, ammonia and dissolved oxygen.
Offering the greatest value of any sonde available in the market, EXO3 combines the manoeuvrability of EXO1 with the powerful anti-fouling wiper of the EXO2. EXO3 is a purpose-built sonde for monitoring major water quality parameters, including: pH, conductivity, temperature, turbidity and dissolved oxygen.
Combine the EXO3 with one of IETG’s telemetry outstations to get your data returned on a daily basis. All of your data can be viewed via our online data platform.
EXO2s Multiparameter Sonde
Water Quality Sonde Hire
Multiparameter Water Quality Sonde with 7 sensor ports (including a central wiper port), optional depth sensor, no battery compartment
EXO Multiparameter Sondes — the best-in-class platform for the highest quality data. EXO's dynamic range of smart sensors provide comprehensive multiparameter water quality data while SmartQC ensures proper calibrations and top sensor performance. You can be confident in your extended deployments thanks to EXO's tough materials and unmatched anti-fouling technology.
Proteus Multiparameter Water Quality Meter
Water Quality Sonde Hire
An award-winning, patented, multi-parameter, real-time sensor platform to accurately and reliably measure BOD, COD, TOC and Coliforms (total, E. coli or faecal) in permanent and temporary applications.
The Proteus is the world’s first scientifically proven real-time sensor for measuring BOD that can measure a wide range of water quality, environmental and industrial applications. A multiprobe that measures your choice of parameter, all in one package, that can deliver data in the toughest field conditions. The Proteus has been designed for its ease of use, reliable data and economical operation.

Let's Talk
Want to find out more about our Flow & Water Monitoring capabilities?