2. Application to industrial odor problems

2.1 Odor source study

• Characteristic elements of an odor source

  We have seen that measuring the dilution factor at the perception threshold of a gas sample gives direct access to the value of the odor concentration of the gas, a characteristic variable of the effluent under study.

  Note 1: as the measurement of K ₅₀ (NF X 43-101 standard) or Z _ITE (EN 13725 standard) is based on diluting the sample with odourless air (see § ...