With the aim to explore range effects in psychophysical scaling of hedonic qualities initially in Single Stimulus Experiments 25 odours have been examined towards their placement on a Category anchored Visual Analogue Scale ranging from extremely pleasant to extremely unpleasant. On the basis of the resulting rank-ordered set of odours 4 stimulus series were compiled, each containing 13 stimuli. 3 series served as range-conditions, containing either the 13 most pleasant, neutral or unpleasant stimuli, while a control series covered the whole hedonic range. The stimulus series were each presented to 10 subjects to be evaluated using the same scale as in the Single Stimulus Experiments. In contrast to observations in other sensory continua such as loudness or pitch, systematic influences of the stimulus ranges on hedonic ratings were not found. The mere fact that odour stimuli are presented in series, however, seem to influence the hedonic judgments.