The lowest concentration of a substance in air that can be smelled. For a given chemical, different people usually have very different odor thresholds (see " Odor", Understanding Toxic Substances , page 25).
Compare? The lowest concentration of a substance in air that can be smelled. Odor thresholds are highly variable because of the differing ability of individuals to detect odors.
The lowest concentration of a substance's vapor, in air, that a person can detect by smell. Odor thresholds are highly variable, depending on the individual and the nature of the substance.
The minimum concentration of a substance at which a majority of test subjects can detect and identify the substance's characteristic odor.
The lowest concentration of an air contaminant that can be detected by smell.
The lowest concentration of a chemical that can be smelled. Different chemicals have different odor thresholds. Also, some people can smell a chemical at lower concentrations than others can.
the lowest concentration of a material's vapor (or a gas) in air that can be detected by smell; frequently expressed as a percentage of a panel of test individuals. .
The airborne concentration, usually in parts per million (ppm), at which an odor becomes noticeable.
The lowest concentration in the atmosphere that can be detected by the human sense of smell. Often, this is a poor indicator of toxicity risk. The greatest dilution of a sample with odor-free water to yield the least definitely perceptible odor.
The minimum odor of a water or air sample that can just be detected after successive dilutions with odorless water. Also called threshold odor.