Innovative calibration strategies


Reliable, sub-ppb (parts-per-billion) trace gas measurements are essential for a range of industrial process and air quality monitoring purposes.

Picarro’s Cavity Ring-Down analysers (CRDS) have become the preferred technology for stable and continuous, high-precision trace gas measurements since their commercial release in 2005. Currently, they are used for a range of gas monitoring purposes, such as fence line emissions near industrial facilities (HF, H2CO, H2S, EtO), air quality inside sterilised isolator spaces (H2O2), occupational exposure limits to toxic gases, stack emissions monitoring to comply with regulations and emissions (HF, H2CO, H2S, EtO), process control to improve yield (HF, SO2, NH3, H2S, HCl), and many other applications. 

A key feature of CRDS analysers is their unprecedented stability and ease of use. This is thanks to low calibration requirements, accomplished by the patented wavelength monitor. The wavelength monitor tracks one or more well-defined spectral reference lines (most commonly: water), which guarantees an unmatched low drift. Therefore, the performance of Picarro’s industrial trace gas analysers only needs to be validated on an infrequent basis (during a yearly performance validation, for example).

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