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(freons) are sometimes used for washing printed circuit boards. CFCs
break down ozone and thereby damage the ozone layer in the stratosphere,
causing increased reception on earth of ultraviolet light with e.g. increased
risks of skin cancer (malignant melanoma) as a consequence.
Lead**
Lead can be found in picture tubes, display screens, solders and capaci-
tors. Lead damages the nervous system and in higher doses, causes lead
poisoning. The relevant TCO'99 requirement permits the inclusion of lead
since no replacement has yet been developed.
* Bio-accumulative is defined as substances which accumulate within living organisms
** Lead, Cadmium and Mercury are heavy metals which are Bio-accumulative.
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