what are the chemicals called that are sometimes used to make the specimens visible?
What chemical is sometimes used to make the specimen visible? A general term for a chemical that makes a specimen visible is a stain. There are many types of stains available, depending upon the structure you want to visualize and â¦ the type of microscope you want to use, e.g. fluorescent stains like DAPI for fluorescence microscopy, or hematoxylin and eosin (H and E) staining for brightfield microscopy.