ABSTRACT
Two commercially-available olfactometers, a Prosser and a T04, were investigated physically and calibrated. The investigations showed that some operational problems of the Prosser could be understood following a detailed physical examination. The T04 did not deliver the dilutions shown on the maker’s calibration curves. The main problem with the T04 arose when flows were measured using the lower parts of the rotameter scales. The T04 could, however, function satisfactorily, a reproducibility within 5%, when only the upper parts of the rotameter scales were used.
The merits and demerits of flow measuring devices and calibration methods are discussed.
