1462. To Reduce Low Proof Spirit to a Still Lower Proof, by the Addition of Water

1462. To Reduce Low Proof Spirit to a Still Lower Proof, by the Addition of Water. First multiply the number of gallons by the difference in degrees of strength between the given proof of the spirit to be reduced, and the required proof to which it is to be reduced. Divide the product by a number ascertained by subtracting the given proof from 100, and the quotient will give the number of gallons of water to be added.

Suppose you want to reduce 40 gallons spirit 10 below proof, to 15 below proof.

Required proof 15

    

Given proof

10

    

Difference

5

    

100

    

40 gallons

10

given

proof

5 difference

90

  

)200(22/9 gals, water

1463. To Raise a Low Proof Spirit to a Higher Required Proof by the Addition of High Proof Spirit

1463. To Raise a Low Proof Spirit to a Higher Required Proof by the Addition of High Proof Spirit. Multiply the number of gallons by a number expressing the difference in degrees of strength between the given proof of the spirit to be raised, and the required proof to which it is to be raised. Divide the product thus ascertained by the sum of the given proof, and the high proof spirit to be added, and the quotient will give the answer.

Suppose you desire to raise 40 gallons spirit 15 below proof to 10 below proof with spirit

10 above proof.

    

Given proof 15

    

Required proof 10

    

Difference 5

    

Given proof

15

40 gallons

High proof

10

5 difference

 

25

)200(8 gals, answer.