ICP (Inductive Couple Plasma). What it does is simple – it injects a sample, in this case salt water, into a plasma chamber that is approximately 10,000 degrees. This extreme temperature breaks everything in the sample apart into the basic elements. Every element is released at a specific wave length. We can then tell the concentration of the element by how much energy is released at that specific wave length. This process allows every element to be picked up from just a few drops of water.