By Anne Marie Helmenstine, Ph.D. Primary Standard Definition: A primary standard is a reagent which is very pure, representative of the number of moles the substance contains and easily weighed. Primary standards are typically used in titrations and other analysis techniques as standardization solutions.rimary Standard Definition: A primary standard is a reagent which is very pure, representative of the number of moles the substance contains and easily weighed.
fallo m (plural fallos) failure; verdict, decision; ruling; Verb . fallo. First-person singular present indicative form of fallar.
fall n. 1  a fall (the act of falling) 2  a fall, loss of greatness or wealth, a bankruptcy. 3  a slope, a waterfall, the height of a slope or waterfall fallet Ã¤r omgivet av skog the fall is surrounded by forest.