Which type of material is run in samples with instruments such as gas chromatography and capillary electrophoresis with the sample to calibrate the run for comparison to other runs?
A) internal standard
B) ladder
C) elimination sample
D) reference sample

Question

Quizplus · Accepted Answer

An internal standard is a known amount of a compound added to a sample prior to analysis. It is used to correct for variations in sample preparation, injection volume, and instrument response. The internal standard runs with the sample and is used to calculate the relative concentrations of the compounds in the sample. This calibration ensures accurate and precise results and allows for comparison between runs. Ladder, elimination sample, and reference sample may not be appropriate for this purpose.

Which Type of Material Is Run in Samples with Instruments