State system for ensuring the uniformity of measurements. State verification schedule for instruments measuring the content of components in liquid and solid substances and materials. Transfer of the units from the state primary standard based on coulometric titration
Uniform provisions concerning the approval of compression ignition (C.1.) and natural gas (N.G.) engines as well as positive-ignition (P.1.) engines fuelled with liquefied petroleum gas (LPG) and vehicles equipped with C.1 and N.G. engines and P.1. engines fuels with LPG, with regard to the emissions of pollutants by the engine
