As per NYS department of Health: Questions have also arisen regarding the appropriate disposal of organs and tissues which have been fixed for cytological and/or histological examination. Since the fixatives are considered to be hazardous materials, organs and tissues discarded with these chemicals must be processed as hazardous waste, except for blocks of tissue in paraffin or similar embedding materials. The latter prevent the fixatives from leaching into the environment and the chemical fixatives destroy any potential pathogens in the tissue block. Therefore, tissue blocks can be discarded as solid waste. Annette Featherstone _______________________________________________ Histonet mailing list [email protected] http://lists.utsouthwestern.edu/mailman/listinfo/histonet
