The flammable liquids must be stored separately from other dangerous substances that may enhance the risk of fire or compromise the integrity of the container or cabinet.
Other dangerous substances that may enhance the risk of fire or compromise the integrity of the container or cabinet/bin are, for example energetic substances, oxidizers and corrosive materials.
It is recognised that these other dangerous substances may be flammable liquids in their own right or held in a flammable liquid. However, it is still inappropriate to store these in the same cabinets or bins with other flammable liquids.
All containers should have a legible label showing the contents so that mixed storage can be avoided.
The use of more than one storage cabinet within a room or laboratory will therefore be necessary to contain separated substances. It may also be necessary to provide more than one highly flammables cupboard in larger rooms or laboratories where it is not practical for users to share storage space.
Fume cupboards are not designed or intended to be used as storage areas and they should be kept clear of materials and containers when these are not needed for the ongoing operational work. Materials stored in fume cupboards may disrupt the air-flow making the fume cupboard less efficient and compromising the safety of the user.
Further guidance on Energetic and spontaneously combustible substances is contained in HS(G)131 published by HSE.