The specimen is put inside a liquid correcting agent (fixative) such as formaldehyde Answer (formalin). This can slowly but surely penetrate the tissue producing chemical and Bodily alterations that could harden and preserve the tissue and shield it versus subsequent processing techniques.two You can find a restricted range of reagents https://charlieavnew.bleepblogs.com/35693915/new-step-by-step-map-for-biodiesel-refining-unit