Oxford Nanopore Technologies makes devices used in the analysis of DNA
Three people have been injured in a "violent chemical reaction" at a science park.
The accident, involving acid and alcohol, led to an unexpected release of toxic and corrosive chemicals at Oxford Nanopore Technologies in Oxford Science Park on Tuesday afternoon.
Thirty-five firefighters used protective suits during the clean-up, which lasted eight hours.
Oxfordshire Fire and Rescue said there were no serious injuries.
'Thorough investigation'
Watch manager Sean Mienie, of Rewley Road fire station, said: "This has taken some time to clear up, but with incidents like this we need to be careful not to expose ourselves or others to these chemicals."
Station manager Jim Davies, of Abingdon fire station, said: "The crews worked really hard; I'm really proud of them."
A spokeswoman for Oxford Nanopore Technologies said: "There was a minor accident in one of our laboratories yesterday. Three people were checked at hospital and then discharged.
"We are grateful to the emergency services for their thorough investigation of the laboratory before our staff were allowed back in the building, and apologise for any inconvenience to our neighbours on the science park."
The company, in Robert Robert Avenue, makes devices used in the analysis of DNA.
