Gas Chromatography

Gas Chromatography (GC)

Gas Chromatography (GC) is an analytical method used to separate and analyze compounds in a sample that can be vaporized without decomposition.

GC is used in many sectors such as chemical, pharmaceutical, environmental, clinical, forensic and food and beverage. In GC, the sample (a solution) is injected into the instrument and enters a gas stream which transports the sample into a separation tube known as the "column." (Helium or nitrogen is used as the so-called carrier gas). Each component of the sample is separated inside the column. The detector measures the quantity of the components that exit the column. The quality of the measurement greatly depends on the precision of the gas flow control inside the instrument and on potential internal/external contamination. Norgren is a supplier of choice for GC OEMs, thanks to the following product ranges: low flow proportional valves (FASPROP), mass flow controllers (CHIPREG) and on/off valves.