Perhaps the most comparable product around is a type of simulated granite, or quartz with resins, that can indeed approach or meet the price of granite at around $35.00 to $80.00 per square foot, depending on color chosen.
Definition of primary standard. 1) A substance of a known high degree of purity that undergoes one invariable reaction with the other reactant of interest.
Hierarchy of standards; WHO and NIBSC are the primary. standards against which secondary standards are. 2011 ASCP Annual Meeting. calibrated. Secondary standards may be national standards, regional. standards or working reference materials used routinely in. the laboratories of manufacturers, regulatory authorities or. others. In this way the potency of biological medicinal products is. calibrated traceable to the WHO primary standard .