cadmium-containing wastes, photochemicals, stains and laboratory reagents, cytotoxic drugs
and other pharmaceuticals. All should be clearly labelled with the type of waste and the name of the major chemicals,
with any necessary hazard labels attached to corrosive, flmmable, explosive or toxic chemicals. Liquid chemical
wastes should never be mixed or disposed of down the drain, but should be stored in strong leak-proof containers.
It may be possible to recover silver from photochemicals at a profi, and return of chemicals to suppliers should
be practised where possible. Silver is increasingly being used in medical products, but is rarely segregated due to
a lack of dedicated disposal or metals recovery facilities. Low-energy light bulbs (compact florescents) contain
small amounts of mercury. Both these and batteries should be segregated and treated by recycling processes, where
suitable facilities exist