1455. To Reduce Spirit a Given Number Above Proof to a Required Number Below Proof, by the Addition of Water

1455. To Reduce Spirit a Given Number Above Proof to a Required Number Below Proof, by the Addition of Water. Multiply the number of gallons of spirit by the sum of the given degree above proof and the required degree below proof, and divide the product by a number to be found by subtracting the required proof from 100. The quotient will give the number of gallons of water to be added.

Suppose you want to reduce 40 gallons spirit 20 above proof to 10 below proof, how much water must be added to accomplish the result ?

It will thus be seen that, to reduce 40 gallons spirit 20 above proof to 10 below proof, it will be necessary to add 131/8 gallons of water, making 531/8 gallons in all.

1456. To Reduce High Proof Spirit to a Required Lower Proof, by the Addition of Water

1456. To Reduce High Proof Spirit to a Required Lower Proof, by the Addition of Water. First multiply the number of gallons by a number expressing the difference in degrees of strength between the given proof of the spirit to be reduced and the required degree, or proof, to which it is to be reduced. Divide the product thus ascertained by a number to be found by adding the required proof to 100.

Suppose you desire to reduce 72 gallons spirit at 30 above proof to 10 above proof, how much water must you add ?

Thus it will be seen that, to reduce 72 gallons spirit at 30 above proof to 10 above proof, it is necessary to add 131/11 gallons of water, making about 85 gallons in all.

1457. To Reduce Spirit of a Given Number Above Proof to a Required Number Below Proof, by the Substitution of Water for Spirit

1457. To Reduce Spirit of a Given Number Above Proof to a Required Number Below Proof, by the Substitution of Water for Spirit. Deduct the number below proof from 100, and multiply the number of gallons by the remainder. Then add the number which the given liquor is above proof to 100, and divide the above product by the number thus obtained. The quotient, deducted from the original number of high proof gallons, will give the answer required. All small fractions may be rejected.

Suppose you want to reduce a cask of 40 gallons spirit at 20 above proof to 10 below proof.

Thus it will be seen that 10 gallons should be removed, and their place supplied with water, in order to make the mixture equal to 10 degrees below proof.