Determining the Physical Characteristics of Paddy Rice
       
  How do you measure the purity of paddy rice?  
  Define dockage (impurities) and relate this term to the procedure for measuring the purity of paddy rice.  
     
What is dockage and why is it undesirable?
  

Paddy rice purity is determined by the amount of dockage (impurities) present in a sample. To maximize the amount and quality of milling outputs, paddy rice should have as little dockage as possible.

  
   



Dockage in a paddy rice sample - less is better.
 

To view the procedure and accompanying worksheet for measuring the amount of dockage present in a sample of paddy rice, click here.

  
Next lesson
   In the next lesson, you will learn the procedure for measuring another important quality characteristic of paddy rice; the percentage of cracked grains.