This method describes how to classify barley according to size using a laboratory sieving machine.
Barley intended for the production of malt is to be evaluated on the basis of the characteristics described below.
A barley sample is classified into fractions according to kernel size in a sieving machine containing three sieves with defined slot widths.
This method describes how to determine not only the variety of barley but whether a lot of barley consists of a mix of varieties.
Barley intended for malt production as well as barley malt
Separation and identification of the protein (hordein) fraction of barley or barley malt by means of gel electrophoresis. The method is suitable for all types of barley, as long as reference substances are available. However, the method cannot be used to identify barley varieties used to produce malt that has been so strongly modified that the protein fraction is almost completely degraded.
This method describes how to classify barley according to size, though this is performed without separating out the half kernels.
Barley malt intended for use in beer brewing or elsewhere in the food industry.
The sieving test represents one of the most important objective physical methods for evaluating malt and can be carried out rapidly and easily. The percentages of total dockage (< 2.2 mm) and that of the kernels belonging to grades I and II can be determined from the results of the sieving test.
Malt intended for use in beer brewing or elsewhere in the food industry
The moisture content of malt is determined through the loss in mass during a standardized drying process, in which ground malt is dried at a defined temperature within a specified time in an electrically heated drying oven. The moisture content is determined through the difference in the weight of the malt prior to and after drying.
It should be borne in mind that allowing the weighed sample of ground malt to stand for any length of time prior to performing the analysis can alter the outcome, depending upon the humidity in the air. For this reason, it is recommended that the analysis be carried out immediately after grinding the malt.
For rapid methods, refer to analysis methods R-110.40.022 Moisture Content in Barley – Infrared Drying to R-110.40.183 Moisture Content in Barley – NIT (Verweise).
This method describes how to determine malted barley varieties and how to detect mixtures of different barley varieties in one lot of malt.
Malt intended for use in beer brewing or elsewhere in the food industry
This method describes how to collect samples of barley.
Barley intended for malting and for which samples must therefore be collected, e.g., upon delivery to a malting facility.