abstract:An internal standard in analytical chemistry is a chemical substance that is added in a constant amount to samples, the blank and calibration standards in a chemical analysis. This substance can then be used for calibration by plotting the ratio of the analyte signal to the internal standard signal as a function of the analyte concentration of the standards.
When companies abandon their perfectionism and begin setting more realistic goals, they need to make sure that they are measuring themselves by external benchmarks, rather than by some internalstandard.