Revision of EBC Method 4.12 for Diastatic Power (DP)

摘要

Submitted by Silja Home and Richard Sharpe on behalf of the Analysis Committee of the European Brewery Convention EBC method 4.12 for Diastatic Power (DP) has been revised to correct an error in the equation for conversion between DP (WK) units and DP (°IoB) units that had previously been published in IoB method 2.7 (January 1997). It is an important change because a close study of some interlaboratory ringcheck schemes revealed that some laboratories were using the equation quoted in the recommended methods to convert, some were using their own correct conversion, and others were measuring by both analytical methods without conversion equations. This led to a greater spread of DP results between laboratories, and some laboratories has a 10% offset to others.