Which chemical is the body solvent?
Water is a tremendous solvent. It is referred to as a universal solvent. Most chemical reactions involve a solution in water. This is because many chemical separate into positive and negative ions in water. When this occurs with more than chemical, it results in a chemical reaction where the ions recombine into other chemicals that weren't there before.
You're doing chromatography, correct? In which you put a piece of some sort of absorbent medium with a chemical you're trying to analyze on it in a solvent that will break down the chemical, and let the wicking of the solvent pull the components of the chemical you're analyzing up the medium? If you were to submerge the dye spot in the solvent, it'd dissolve into the solvent rather than separating out and you'd get…