General and substance-specific aspects of the measurement strategy to be taken into account before and during sampling as well as measurement procedures for individual substances or groups of substances in indoor air are described in the single parts of DIN ISO 16000. DIN ISO 16000-6 describes the measurement procedure for the determination of volatile organic compounds (VOC) in indoor air. In addition, the measurement procedure is suitable for the VOC-measurements in test chambers dealt with in DIN EN ISO 16000-9 to -11. This second edition cancels and replaces the first edition (2004-12), which has been technically revised. Furthermore, the determination of very volatile and semi-volatile organic compounds is added.