This standard describes the procedure and equipment for the determination in the airborne at the workplace, through the active sampling on activated charcoal tubes and analysis by gas chromatography (CG), of compounds belonging to the following organic families: aliphatic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons, esters, alcohols and ethers, as well as other types of organic vapours that are compatible with sampling in active charcoal tubes and the total or partial use of carbon disulphide as desorption solvent. The procedure of measurement described can be used to carry out measurements to determine the occupational exposure concentration, measurements for comparison with limit values (occupational) to evaluate the exposition via inhalation and periodic measurements. It may also be used to carry out screening measurements of time weighted average concentration (see UNE-EN 482, 4.2) and screening measurements of variation of concentration in space (see UNE-EN 482, 4.3). It cannot be used to measure instantaneous concentrations or fluctuations of the concentration in short periods of time