Application Note: Preparation of Standards – Easier than Ever with the Sartorius Cubis MSA Dosing System
24 July 2019

Preparation of standards of known concentrations is a common routine procedure in analytical laboratories. Internal or external standards with very low concentrations are used in these laboratories for highly sensitive quantitative analytical methods to exactly determine the concentration of chemical compounds in samples. External standards are separate samples used for comparison to test samples, whereas internal standards are added to the samples to be analyzed. Therefore, the concentration of such standards must be as accurate as possible to prevent subsequent errors in the determination of unknown concentrations of compounds in samples.