Olfactometru (from lat. olfactus - smell, and Greek. metreo - measure, determine) - a device for measuring the severity of smell.
In the simplest olfactometric provided by the retraction in the nose smelling substances from the sealed vessels. The main source of error is the failure to account for the power of prinucovania (the more moves in the air, the more odorous molecules gets into the nose).
This deficiency can be corrected, if you give odorous substance into the nose violently in the retentions. Based on this principle domestic olfactometer proposed N. C. Melnikova and L. B. Dainiak (plant "Technolog"). Along; with pulse air supply in this olfactometru possible the continuous supply of vapor odorous substances, which is important when defining adaptation. Continuous supply of vapor odorous substances is performed when connecting olfactometru to rhinopneumonitis or other source of air with a capacity of 10 l/min Olfactometer Melnikova - Dynak (Fig. ) consists of banks 1 capacity of 1 l with odorous substance" hermetically sealed tube 2, through which missed a short 3 or 4 long tube; pump with 5 valves suction 6 and 7 discharge and shaft 8 with divisions (ACC. 1 cm3); liquid manometer 9 with scale division 10, five cranes: controlling the flow of vapor 13 and 14 air, switching gauge 15, shut 16 and 17; system tees and connecting tubes 18-23, olive with a through hole 11 and without opening 12. When the pulse flow measured on a scale rod pump amount of air is routed to the Bank. Cranes 14, 16, 17 should be closed. The amount of the introduced air can be measured by the gauge at the position of the crane 15 "manometry". When you open the faucet 17 olive air jet with pairs of odorous substances leaves and olive and enters the nose. After measurements olive sterile, all the cocks overlap.
Tests of smell is carried out in well-ventilated area and at a constant temperature.