Immunoglobulin E (IgE) is an antibody that is produced by the bodyâs immune system in response to a perceived threat. It is one of five classes of immunoglobulins (A, G, M, D, and E) and is normally present in the blood in very small amounts. This test measures the amount of IgE in the blood.mmunoglobulin E (IgE) is an antibody that is produced by the bodyâs immune system in response to a perceived threat. It is one of five classes of immunoglobulins (A, G, M, D, and E) and is normally present in the blood in very small amounts. This test measures the amount of IgE in the blood.
For example, in paper chromatography water is the mobile phase and paper is the stationary phase. The solution's components ideally move at different speeds as they travel through the stationary phase so that they can be separated. Take one of the paper towel strips you prepared and place the pencil line you drew on top of the now-colored drop of water. Do you see the dye soak into the strip, coloring the area around the line? You can get some extra dye on the line by dabbing the sides of the wet candy with it.
Save. Jupiterimages/Photos.com/Getty Images. During thin layer chromatography a technician places spots of a chemical mixture on a flat plate coated with a layer of absorbent material and then sits the lower portion of the plate in solvent.As solvent moves up the plate, chemicals in the mixture move up with it at different rates, so they separate.This test can determine which chemicals are in a mixture by comparing the travel rates of unknowns to known standards. The results, however, can be affected by many factors.ave. Jupiterimages/Photos.com/Getty Images. During thin layer chromatography a technician places spots of a chemical mixture on a flat plate coated with a layer of absorbent material and then sits the lower portion of the plate in solvent.