Analytical chemistry now touches more interdisciplinary areas and plays a greater role in the multiplication of the scope of the chemical science in general than ever before. Medical doctors, and thus the general public, have come to rely on analytical chemistry for an accurate analysis of blood, urine, skin, and other biological tissue and fluids. Analytical chemistry has found its way into such fields as veterinary science, archaeology, farming, and space travel. The modern principles and applications of analytical chemistry in today's world are as important and as relevant to our existence as any other field that exists. The presentation of the theory and application of the myriad of wet and instrumental techniques and procedures available to the analyst is the primary objective of this text and cannot be handled in a few paragraphs. Laboratory workers must develop a kind of psychology for operating in a chemical analysis laboratory.