A malleolar registration clamp comprising a reference unit and a receiving portion for receiving the malleolus, wherein the receiving portion is designed to receive at least part of the malleolus in a defined position relative to the receiving portion, and the position of the reference unit relative to the receiving portion is defined. At least one logic element issues access requests requesting access to the resources, and each access request identifies which of the resources is to be accessed. Finally distilling to remove the impurity-containing siloxane complexes from the silicon source material.