Ifmaterials are transferred into other containers, the employer mustensure that these are labeled as well, unless they fall under theportable container exemption (paragraph f(7)). In terms of labelingsystems, you can choose to use the labels provided by your supplierson the containers.
Confidence votes 178. Iodine is often called a mordant when used in the gram stain. What its function is, is to form large crystals with the Crystal Violet dye used as the first stain.
1 Coomassie blue-stains proteins a brilliant blue, and is often used in gel electrophoresis. 2  Crystal violet-stains cell walls purple when combined with a mordant. 3  This stain is used in Gram staining. 4  DAPI-a fluorescent nuclear stain that is excited by ultraviolet light, showing blue fluorescence when bound to DNA. Hematoxylin-a nuclear stain that, with a mordant, stains nuclei blue-violet or brown. 2  Hoechst stains-two types of fluorescent stains, 33258 and 33342, these are used to stain DNA in living cells. 3  Iodine-used as a starch indicator. 4  When in solution, starch and iodine turn a dark blue color.