Reference Material (RM)
A material or substance one or more of whose property values are sufficiently homogeneous and well established to be used for the calibration of an apparatus, the assessment of a measurement method, or for assigning values to materials.
Read more about this topic: Certified Reference Materials
Famous quotes containing the words reference and/or material:
“In sum, all actions and habits are to be esteemed good or evil by their causes and usefulness in reference to the commonwealth, and not by their mediocrity, nor by their being commended. For several men praise several customs, and, contrarily, what one calls vice, another calls virtue, as their present affections lead them.”
—Thomas Hobbes (1579–1688)
“We must accept or refuse one another as we are. I could tame a hyena more easily than my Friend. He is a material which no tool of mine will work.”
—Henry David Thoreau (1817–1862)