YL INSTRUMENT GAS CHROMATOGRAPHS

A gas chromatograph (GC) is an analytical instrument that measures the content of various components in a sample.

The principle of gas chromatography are as follows:

  1. The sample solution is injected into the instrument and enters a gas stream which transports the sample into a separation tube known as the "column." (Note: Helium or nitrogen is used as the so-called carrier gas).
  2. The various components are separated inside the column.
  3. The detector measures the quantity of the components that exit the column.
  4. In order to measure a sample with an unknown concentration, a standard sample with a known concentration must first be injected into the instrument. The standard sample peak retention time (appearance time) and area are compared to the test sample to calculate the concentration.

GC Product Brochures

YL6500