Varian 3900 Gas Chromatography

• Quality control in chemical and petrochemical industries for purity analysis.
• Environmental monitoring for detecting pollutants in air, water, and soil samples.
• Food and beverage analysis for flavour compounds, contaminants, and authenticity.
• Pharmaceutical research and manufacturing for drug purity and stability testing.
• Forensic science for identifying unknown substances and trace evidence.

Typical oven temperature range

Units of this type commonly offer a maximum operating temperature up to 450°C.

Column compatibility

This model typically accommodates standard 7" (17.5 cm) diameter capillary columns.

Detector type

This specific unit includes a Flame Ionisation Detector (FID), common for organic compound analysis.

Injector type

This unit features a 1041 Packed Injector, suitable for various sample introduction methods.

Footprint

For this class of equipment, the Varian 3900 is noted for its compact design, occupying less than half the workspace of an average GC unit.

Power supply

Gas chromatographs typically require standard laboratory electrical supplies, often 230V, 50Hz for UK operation. Buyers should confirm specific power requirements with the seller.

Gas requirements

GC systems require high-purity carrier gases (e.g., helium, nitrogen, hydrogen) and detector gases (e.g., hydrogen, air for FID). Specific gas types and purity levels should be confirmed.

• What is a Gas Chromatograph (GC) used for?

  A Gas Chromatograph is an analytical instrument used to separate and analyse compounds that can be vaporised without decomposition. It is widely used for qualitative and quantitative analysis of volatile and semi-volatile organic compounds.

• What is an FID and what are its advantages?

• Can this unit be integrated with other laboratory equipment?

• What maintenance is typically required for a used GC system?

• What are the common challenges when purchasing a used GC?

Chromatography systems command strong respect within analytical and pharmaceutical sectors. Buyers typically prioritise equipment with verified maintenance records and clear calibration history, as these directly affect analytical accuracy. Used units from established manufacturers remain highly valued for their reliability. Key strengths include reproducible results, robust construction, and established spare parts availability. Industry sentiment reflects confidence in these systems when sourced from reputable suppliers with transparent service documentation.

Vue d'ensemble pour ce type de machine