Laser technology helps uni identify hundreds of bottles of unknown chemicals

29 October 2026 by CSG

Ground-breaking laser technology was utilised to safely identify and dispose of more than 100 bottles of unknown chemicals from a university laboratory, saving the institution thousands of pounds.

Waste management specialist CSG was called to The University of Manchester to dispose of unlabelled containers containing potentially dangerous substances.

The chemicals had accumulated over time as a result of restructuring and mergers.

CSG is one of the only waste management companies in the country to own a handheld Agilent Raman spectrometer, which enables accurate, through-barrier identification of hazardous chemicals at customers’ sites, without the need for containers to be opened.

Dr Stuart Atkinson, who leads the Lab Chemical Waste Collection Team at CSG, said: “The university has had several relocations in recent years so it is understandable that some unknown substances have been accumulated.

“A particular concern involved a 25-litre drum labelled only in fragments, suggesting the presence of an organic peroxide – a potentially unstable and hazardous substance

“However, after investigation using our Raman spectrometer it was determined the drum in fact contained cured polystyrene resin. This substance could be safely disposed of by our team without the need for explosives experts, saving the university huge financial expense.

“All other chemicals were analysed and taken away for safe disposal, without having to open the containers. This is an excellent example of the significant benefits of a Raman spectrometer.”

Previously the only way to identify the contents of an unlabelled chemical container was to open it for sampling and analysis via dip testing or lab-based instrumentation.

CSG’s Agilent Raman spectrometer produces rapid results through sealed, clear and coloured glass and plastic opaque containers.

The only limitations on the Raman spectrometer are chemicals which are in sealed containers through which the laser beam cannot penetrate, such as metal tins.

The device works by scattering light from a high-intensity laser light source, producing different wavelengths or colours to determine the chemical.

Once known, CSG or one of its trusted partners can then arrange to dispose of the chemicals compliantly and safely.

Dr Stuart added: “The Agilent Raman spectrometer now plays a key role in CSG’s lab waste services, supporting our customers in managing complex chemical waste challenges.

“We’d be delighted to help more organisations to check their chemicals to remain safe and compliant.”