PIKE Technologies offers several Long-Path Gas Cells for analysis of trace components in gas samples – typical concentrations may range from the percent to ppb levels. The long-path cells feature a folded path design providing an extended pathlength within a compact dimension. The FTIR beam enters the cell through an IR transparent window and reflects a number of times between the accessory mirrors before exiting to the detector. The number of reflections is determined by the optical configuration of the cell and may be selected as a permanently aligned version or a user-adjustable version (variable-path cells). Cell pathlengths range from 2.4 to 20 m fixed and a 1 to 16 m variable. Typical applications of the long-path gas cells include air pollution studies, gas purity determinations, m...Read more
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