1
Gases and chemicals used in industry and science, Especially for use in the following fields: Special applications and for analysis purposes, Especially High purity gases and exact mixtures consisting of nitrogen, oxygen, saturated and unsaturated hydrocarbon gases, hydrocarbon compounds, hydrogen, carbon dioxide, carbon monoxide, nitrogen oxide, sulphur compounds and other gases having technical applications, exact mixtures of all the aforesaid gases; Special gases, namely gases for calibration, examination and testing purposes, in particular including certified reference materials and exact gas mixtures, gas mixtures in particular for calibration and analysis purposes, in particular for calibration of high precision measuring apparatus and scientific equipment
37
Refilling of containers for gases, Especially, Refilling of containers with special gases and gases for analysis purposes and for the calibration of scientific equipment
39
Rental of the following goods: Containers for gases
42
Engineering services, namely Engineering consultancy in the following fields: Industrial goods manufacture using gases, measurement technology using gases, science and research using gases, in particular calibration gases; Services of a technician or Engineering services, namely Calibration of apparatus and instruments on site and relevant testing in connection with the calibration of apparatus and in connection with gas measurement and gas analysis on site; Engineering services, namely gas analysing services, Gas measurement and Measuring of emissions of gases into the atmosphere for others