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waste cross

For exact execution of blends or cuvées in the winemaking Different calculation formulas are used with a desired or calculated result. The impact of a blast on analytical Values such as alcohol content or acidity can be calculated with it. This after the Swiss mathematician Daniel Cramer (1704-1752) called "Cramer's Cross / Rule" is usually referred to as a blend cross during assembly. The difference between two or more wines is compared and determined by ratio calculation (proportion).

On the left side of the cross are the known starting values, such as the alcohol content of two wines A and B. In the crossing point is the desired value of the mixture. Now the difference from the value on the top left and the desired value is determined and the result entered on the bottom right. Then the difference between the value bottom left and the desired value is determined and the result entered in the upper right corner. The results are noted without sign. On the right side of the cross, you get as a result of the "shares of the total mass" (not on the volume!), With which one can reach the desired value.

Cramer's Cross

For example, wine A at 12% vol should be blended with wine B at 13.5% alcohol by volume. The desired result is 12.3%; where the proportions of the two wines are calculated as follows: the difference of wine A to 12.3 is 0.3 - that of wine B is 1.2. This means that of the wine A 1,2 parts (for example 1,200 liters) and of wine B 0,3 parts (for example 300 liters) are needed; the total number of parts is 1.5 (1,500 liters). Cramer's Cross will also be presented at the ceremony sweetness, this means sweetening used by grape must.

Blend Cross - example with alcohol content of two wines

mixture bill

Another requirement is the content of an ingredient such as alcohol to calculate when wines with different alcohol content are blended. This is done by means of mixing calculation. The resolution by equation: wine A plus wine B = wine AB. Quantity times salary A plus amount times salary B = amount times salary. For example, 800 liters of wine A at 12% vol are blended with 200 liters of wine with 13.5% alcohol by volume. The result of the alcohol content is calculated as follows: 800 times 12 (9,600) plus 200 times 13.5 (2,700) = 12,300 broken by 1,000 = 12.3% vol alcohol content. See also below Cuvée,

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