We use a kind of powder which is in form of agglomerate due to handling. In order to use this material in our process we have to crush these agglomerates. The first problem is that we use it in dry process and we cannot dissolve it in any kind of liquid. The second problem is that this material is quite sensitive to the milling. The agglomerate are soft and one can crush them between fingers. Has anybody any suggestion for example a kind of gentle milling? ■