| 摘要 |
Apparatus for evaluating the fragrance characteristics of a substance comprises a cylindrical chamber (2) in which is located a block (3) for supporting a substance, e.g. a fragrance to be evaluated. A flow of air, generated by a fan (4), passes through the chamber (2), around the substance and leaves the chamber via a main outlet (7) and a plurality of sensing outlets (12) each provided with a metering valve (13) leading the air flow to a corresponding nasal mask (16). Individuals take two or three sniffs of the air flow from the mask and record their findings on a pre-prepared form.
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