41 Organising, conducting and arranging of seminars for usage and calibration and for calibration services in relation to the following goods: flow meters, liquid flow meters, mass flow meters, flow control installations [electric], measuring, counting, alignment and calibration instruments, control apparatus [regulators], electronic measuring apparatus, gas flow meters, mass meters, measuring apparatus and instruments; organising, conducting and arranging of seminars for usage and calibration and for calibration services, in relation to the following goods: programmable logic controllers, gas blenders, specifically, for laboratory use, test benches for the aforesaid equipment and apparatus, fittings for the aforesaid equipment and apparatus, specifically, straight conduits, measurement sensors, linearisers, flow indicators