To determine the odour of the given sample of water using human olfactory system.
The extent of odour present in a particular sample of water is measured by a term called odour intensity, which is
related with the threshold odour. The threshold odour number represents the dilution ratio at which odour is hardly
- Measuring jar,
- Pipettes etc.
- Take a known volume (A) of odorous water in a measuring jar.
- Gradually add odour free distilled water to the sample. Addition of water is continued till the sample
just lost its odour.Note down the total volume.
Observation and Calculation