TABLE FOR CONVERTING WEIGHTS INTO PERCENTAGES 3 



The solution of the following problem will illustrate the "use of 

 the table: 



Problem. — A sample weighing 240 grams contains 8 grams of damaged corn. 

 is the percentage of damaged corn contained in the sample? 



What 



Referring to Table I (p. 6), follow down the first column to the 

 figure 8.0 (the weight of the separation of damaged corn in grams). 

 The figure opposite (in the second column, with heading 240) is 

 found to be 3.3, which is the correct percentage expressed to the 

 nearest tenth of 1 per cent. 



Fig. 2. — Cross section of the sampling device at the base of the cone. 



The use of the table will save time in converting the separations 

 into terms of percentages of the whole sample analyzed, and its care- 

 ful use will prevent errors which often, occur in the mathematical 

 calculations involved when the table is not used. 



In this connection it is highly essential that extreme care should be 

 taken to preserve the accuracy of the sample when reducing the 

 original 2^ or more pints taken from the bulk grain to the smaller 

 sample of approximately 250 grams for analytical purposes. Ex- 



