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.
noun, plural limbos. 1. (often initial capital letter) Roman Catholic Theology. a region on the border of hell or heaven, serving as the abode after death of unbaptized infants (limbo of infants) and of the righteous who died before the coming of Christ (limbo of the fathers or limbo of the patriarchs)