Gas Chromatography (GC)- NRM Division, HQ, Umiam
Instrument details:  
Make: Themo-scientific
Model: Trace GC 800
Gas chromatography (GC) is a common type of chromatography used in analyticalchemistry for separating and analyzing compounds that can be vaporized withoutdecomposition. Typical uses of GC include testing the purity of a particular substance, orseparating the different components of a mixture (the relative amounts of such componentscan also be determined).

Working principle:In GC, the mobile phase is a carrier gas, usually an inert gassuch as helium or an un-reactive gas such as nitrogen. The stationary phase is a microscopiclayer of liquid or polymer on an inert solid support, inside a piece of glass or metal tubingcalled a column. The instrumentused to perform gas chromatography is called a gas chromatograph (or “aerograph”, “gasseparator”).In general, substances that vaporize below 300 °C (and therefore are stable up to thattemperature) can be measured quantitatively. The samples are also required to be free and theyshould not contain ions. Very minute amounts of a substance can be measured but it is oftenrequired that the sample must be measured in comparison to a sample containing the pure,suspected substance known as a reference standard.

  • GC used to determine the identity of natural products containing mixtures of similar compounds
  • Determination of pesticide residues in agriculture/aquaculture products
  • Qualitative and quantative analysis of phytosterol content in food products
  • GC is used to quantify GHG emissions under climate change
  • GC is used extensively in forensic science to identify and quantify various biological specimens and crime-scene evidence
User instruction:
20 ml gas sample in 50 ml syringe locked with three-way stop cock.
Contact us:

Director, ICAR Research Complex for NEH Region, Umiam 793103, Meghalaya.

Phone No: (0364) 2570257

Email: /

Charges excluding GST:
  Industry University National Lab and R&Ds  
CO2 Rs. 500/- Rs. 400/- Rs. 400/- Per sample
CH4 Rs. 500/- Rs. 400/- Rs. 400/- Per sample
N2O Rs. 500/- Rs. 400/- Rs. 400/- Per sample