Cover the spill  immediately to prevent further aerosolisation. Use any available material, eg. paper  towels, newspapers or even a laboratory coat

Soak the cover with  appropriate disinfectant and completely wet the area

Leave the room for at  least two hours to allow the HEPA filter system of the BSC to dilute the infectious droplet nuclei

Place all broken tubes/containers in an appropriate container and discard by one of the waste disposal options described earlier

Clean the inside of  the BSC with appropriate disinfectant and mop the floor and bench tops