Gas Clean Filter System

Varian has announced advances to its Gas Clean Filter System, for delivering clean gases for gas chromatography and gas chromatography/mass spectrometry, liquid chromatography/mass spectroscopy and inductively coupled plasma operations.

A carbon dioxide filter improves the sensitivity of both flame photometric detectors in GC and the CO₂ detector in total organic carbon analysers, allowing chemists better results from their instruments.

Another addition is the universal high-flow base plate that handles flow rates up to 20 L/min, compatible with all Varian filters. The range of applications is expanded and includes the use with collision gas to prevent mass interferences in LC/MS and for argon supply filtering in ICP-OES and ICP-MS.

Improvements to the absorbent materials in both the GC/MS and moisture filters allow them to stabilise more quickly to reduce downtime and improve productivity.

In gas chromatography, the filters are positioned in the gas line between the compressed gas cylinders and the instrument. Reducing contamination in the gas reduces the risk of column damage. With the filters in place, chemists can use less expensive, lower grade gases for required results, eg, filters provide immediate savings of up to 50% on helium, with no loss in analytical quality.

Using Gas Clean Filters with the company’s FactorFour ultra-low-bleed columns and new GC instruments will optimise GC and GC/MS performance.