EN13725

Geometric mean

An average or mean calculated by taking the nth root of the product of n numbers. The geometric mean is used in the EN13725 and E679-04 standards in order to…

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Olfactometer

A device that is used to determine odour concentration, odour intensity and hedonic tone.  This is achieved by diluting the odour sample with odour-neutral air, which is then presented to…

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