UK stack testing company has chosen the Testa iFiD-mobile transportable TOC analyser as part of major upgrade to monitoring fleet. The UK Environment Agency has confirmed that the transportable emissions monitors (T-CEMs) certified to EN15267-4 should be used by accredited stack testing companies where they are available. The commitment to gain EN15267-4 certification is considerable – involving extensive and exacting laboratory tests and also on-site testing at 5 different industrial processes.