Environmental News

Algae-Wader Pro system, which is an easy to use portable in-situ algae monitor providing data on Chl-a and other algae based pigments

The Finnish Environment Institute SYKE, has recently taken delivery of a CTG ALGAE-Wader Pro system, as part of the programme ‘Far Out! – Pupils as Environmental Scientists’.  The Project aims to achieve multidisciplinary learning models via environmental research projects with pupils using different technological instruments and measurements as part of the research processes.  The CTG Algae-Wader Pro system, which is an easy to use portable in-situ  algae monitor providing data on Chl-a and other algae based pigments, will be used to augment current practises of taking samples for laboratory analysis.   

Justin Dunning to present new sensors for the water and waste water markets at WEFTEC 2017

CTG will be exhibiting at the WEFTEC 2017  Conference & Exhibition in Chicago during 30 September – 3 October 2017 in the UK Pavilion with the UK DIT and British Water.  Justin Dunning will be presenting on CTG’s new Multi-Parameter fluorometer - the V-Lux - which can be configured for detection of a number of compounds including Algae, Tryptophan (for Bacterial Monitoring / BOD) and Hydrocarbons. Field fluorometers have traditionally been challenged by interfering fluorescence from non-target compounds, high turbidity levels and high concentrations which can directly impact the accuracy of the readings obtained. The new fluorometer includes 3 fluorescence channels as well as absorption, turbidity and temperature channels which allow corrections from these potential interferences, providing unambiguous data of the target compounds and providing range levels previously unobtainable from field fluorometers.


Dr John Attridge, Technical Director presents: “The CTG Multi-parameter Fluorometer: A new approach to in-situ fluorescence measurement” at the 59th Marine Measurement Forum staged by The Hydrographic Society UK at BP’s Upstream Learning Centre, UK on 7th July.   The new multi-parameter fluorometer, the V-Lux, is a low cost, miniaturized, multi-channel sensor providing high quality in-situ detection of Algae, Hydrocarbons, CDOM and Tryptophan like fluorescence. 

Uses and benefit of Low Cost Sensors

“Uses and Benefits of Low Cost Water Sensors” by Justin Dunning, International Environmental Technology magazine

The provision of low cost sensors to organisations involved in water monitoring is a growing challenge to sensor manufacturers. Both the Water Industry and Environmental Agencies are starting to apply smart monitoring networks, but it would be fair to say that they are behind the curve when compared to other industries involved in the built environment and transport.

The real benefits of low cost water sensors can be seen when they are used on large regional scales, eg monitoring of streams and rivers in a catchment. The  catchment sensor network the Environment Agency in England operates is a prime example. Another useful large scale application for low cost water sensors is in pipe networks, both for water supply and recovery. Full article.

90 TriLuxes sold to Sweden

Justin Dunning is pleased to announce a new contract has just been awarded to Chelsea Technologies Group to supply over 90 CTG TriLux fluorometers for use on a Swedish pioneering programme to develop standardised infrastructures for understanding mesocosm experiments in lakes.  

These TriLux fluorometers are all configured to measure Chlorophyll a, Phycocyanin Algae Pigment and Turbidity, to inform on how planned experiments will affect the Algae within these lakes.  The fluorometers will provide data in SDI-12 format for onward transmission.  A set of approximately 20 TriLuxes are destined for five different research stations. 

Contact Us:

55 Central Avenue
West Molesey

Tel: +44 (0)20 8481 9000
Fax: +44 (0)20 8941 9319