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°WK or degrees Windisch-Kolbach is a unit for measuring the diastatic power of malt, named after the German brewer Wilhelm Windisch and the Luxembourg brewer Paul Kolbach. It is a common unit in beer brewing (especially in Europe) that measures the ability of enzymes in malt to reduce starch to sugar ( maltose). It is defined as the amount of maltose formed by 100 g of malt in 30 min at 20 °C. Degrees Lintner is a unit used in the United States for the same purpose. The conversion is as follows:

${\displaystyle {}^{\circ }{\mbox{Lintner}}={\frac {{}^{\circ }{\mbox{WK}}+16}{3.5}}}$

${\displaystyle {}^{\circ }{\mbox{WK}}=\left(3.5\cdot {}^{\circ }{\mbox{Lintner}}\right)-16}$.

334 °WK = 3.014×10⁻⁷ Katal

References

• W. Diemair: Analytik der Lebensmittel Nachweis und Bestimmung von Lebensmittel-Inhaltsstoffen, Springer Verlag, Berlin/Heidelberg/New York 1967, S. 255–256.

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