Steroid isolation , depending on context, is the isolation of chemical matter required for chemical structure elucidation, derivitzation or degradation chemistry, biological testing, and other research needs (generally milligrams to grams, but often more  or the isolation of "analytical quantities" of the substance of interest (where the focus is on identifying and quantifying the substance (for example, in biological tissue or fluid). The amount isolated depends on the analytical method, but is generally less than one microgram.  [ page needed ] The methods of isolation to achieve the two scales of product are distinct, but include extraction , precipitation, adsorption , chromatography , and crystallization . In both cases, the isolated substance is purified to chemical homogeneity; combined separation and analytical methods, such as LC-MS , are chosen to be "orthogonal"—achieving their separations based on distinct modes of interaction between substance and isolating matrix—to detect a single species in the pure sample. Structure determination refers to the methods to determine the chemical structure of an isolated pure steroid, using an evolving array of chemical and physical methods which have included NMR and small-molecule crystallography .  :10–19 Methods of analysis overlap both of the above areas, emphasizing analytical methods to determining if a steroid is present in a mixture and determining its quantity. 
Also, giant sets consist of doing the same exercises for the same body part.
Why Train With Different Set Systems
Training with different set systems allows you to shock your body into growth. All to often, people get stick to training solely with traditional sets, but they can get better results when they train with giant sets, drop sets, tri-sets, compound or super sets. Plus, training with different set systems can help you reach your bodybuilding goals faster. Also, training with other set systems can help you complete workouts faster, so if you don’t have a lot of time, then start using giant sets, drop sets, tri, compound or super sets.