As it is known, barley and its product malt is one of the main raw material for the brewing process. Both, maltsters and brewers, are interested in getting the best available material to harm possible occurring problems during processes like lautering, filtration, and so on. For example it has been shown that the malt raw material is one of the main causes of filtration problems. Therefore the raw materials have to be looked up, especially in its specifications which are often referred to as indices. Only good indices will lead to a perfect product. This specifications are written down in contracts.

Specifications of the delivery of barley to maltsters and of malt to brewers