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.
The Iodine test is used to test for the presence of starch. Iodine solution â iodine dissolved in an aqueous solution of potassium iodide â reacts with the starch, producing a purple-black colour. The colour can be detected visually with concentrations of iodine as low as 0.00002 M at 20 Â°C.