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.
Macho in Portuguese and Spanish is a strictly masculine term, derived from the Latin mascÅ­lus meaning male (today hombre or varÃ³n, c.f. Portuguese homem and now-obsolete for humans varÃ£o; macho and varÃ£o, in their most common sense, are used for males of non-human animal species).