Histotechnology I- Miscellaneous
Question No. 11. The Answer is: (D) Bouin's fixative.
Question: Zenker's fixative, Olmacher's fixative, and B-5 solution contain mercury. Osmic acid fixative contain osmium but this fixative is rarely used today for histopathology. It is still used for fixation for electron microscopy for some purposes. Bouin's solution does not contain any heavy metal.