Sample—one of a number of things, or part of a whole, that can be looked at to see what the rest is like

Precision—the quality or state of being precise

Accuracy—freedom from mistake or error ; degree of conformity of a measure to a standard or a true value

Sample— A sample of a substance or product is a small quantity of it that shows you what it is like；A sample of a substance is a small amount of it that is examined and analysed scientifically.
Reference Material—a book or a essay to which you can refer for authoritative facts
Matrix Reference Material—
Matrix ['meitriks]
n.1.a rectangular array of elements (or entries) set out by rows and columns
2.an enclosure within which something originates or develops (from the Latin for womb)
3.the body substance in which tissue cells are embedded
4.the formative tissue at the base of a nail
5.mold used in the production of phonograph records, type
Simulated Reference Material—
Synthetic Reference Material—
Surrogate Reference Material—
Qualitative analysis—
Quantitative analysis—
Precision— If you do something with precision, you do it exactly as it should be done
Accuracy—The accuracy of information or measurements is their quality of being true or correct, even in small details.
Qualitative Control—Ensure the quality is above a certain level
X-control chart—Control charts, also known as Shewhart charts (after Walter A. Shewhart) or process-behavior charts, in statistical process control are tools used to determine if a manufacturing or business process is in a state of statistical control.
Recovery-control chart—
其他的我也不知，幫不到你了，抱歉，