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olfactometer
An olfactometer is an instrument used to detect and measure odor dilution. Olfactometers are used in conjunction with human subjects in laboratory settings, most often in market research, to quantify and qualify human olfaction.〔(Electronic noses, GC/MS systems, and human sensory panels provide varied solutions for product-odor concerns )〕 Olfactometers are used to gauge the odor detection threshold of substances. To measure intensity, olfactometers introduce an odorous gas as a baseline against which other odors are compared.
Many scientists use the term "olfactometer" to refer to a device used to study insect behavior in presence of an olfactory stimulus. It consists of a tube with a bifurcation (with "T" or "Y" shape) where an insect walks and decides between two choices, usually clean air versus air carrying an odor. This is why this device is also called dual choice olfactometer.〔Beavers JB, McGovern TP and Adler VE (1982) Diaprepes abbreviatus: Laboratory and field behavioral and attractancy studies. Environ Entomol 11:436-439〕〔Otálora-Luna F, Hammock J, Alessandro RT, Lapointe SL, and Dickens JC (2009) Discovery and characterization of chemical signals for citrus root weevil Diaprepes abbreviatus. Arthropod-Plant Interact. DOI 10.1007/s11829-009-9058-7.〕
Alternatively, an olfactometer is a device used for producing aromas in a precise and controlled manner.
== Flow-olfactometer ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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