January 13, 2020 Javis Nwaboh of project partner PTB recently presented a poster on an aspect of the project at the GAS Analysis 2019 conference, 18-20 June 2019 in The Hague, Netherlands. The poster, The heterogeneity effects on dTDLAS-based CO sensor for industrial emission monitoring applications covers a 4.6 μm EC-QCL based TDLAS CO spectrometer. The two gas cells configuration enables to investigate the heterogeneity effects on dTDLAS applications. The CO concentration and line width were measured under different heterogeneous conditions and compared to those under uniform settings. Currently the dTDLAS method is implemented for HCl measurements as a principle technique for cross-stack emission control.