Derwentside Environmental Testing Services (DETS), established in 1999 and now part of the SUEZ Group, is one of the most respected analytical testing facilities in the UK. The team has grown the business through reputation and quality and are proud to say they are still the laboratory of choice for their original customers. The laboratory, based in Consett, has reached this enviable position by having a philosophy of listening and forming honest and transparent relationships with its clients, providing quality data in a timely fashion and going that ‘extra mile’ to provide added value. Regarded as a centre of excellence for asbestos testing, the laboratory holds full UKAS accreditation for the identification of asbestos fibres in bulk materials and soils, the identification and quantification of asbestos in soils, aggregates and ballast to 0.001% and water absorption of asbestos materials. In addition, DETS offers a full range of environmental testing methods for contaminated land investigation and clean up, top soil, waste characterisation and Waste Acceptance Criteria testing, waste water analysis of effluents and landfill monitoring, and has a strong reputation with Geotechnical & Civil Engineers with analysis to BS 1377, BRE SD1 and TRL 447 standards. Recent developments and expansion of the laboratory has resulted it being able to offer a comprehensive analytical service for conventional and waste derived fuel, anaerobic digestion and biomass potential.