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  Determination of Odour
 
     
 
Aim
To determine the odour of the given sample of water using human olfactory system.

Principle
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 detectable.

Apparatus
  1. Measuring jar,
  2. Pipettes etc.
Procedure
  1. Take a known volume (A) of odorous water in a measuring jar.
  2. 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



Results

 
     





     
     
 
 
     
 
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