Abstract: A capsule holder for a dental amalgamator which holds a capsule firmly for high speed amalgamation but which allows easy insertion and removal. The holder has a body with a spring containing cavity at one end capable of receiving a first end of a capsule when this is inserted at an angle to the axis of the recess, and at the other end of the body there is provided a pivotable retainer for the second end of the capsule. The retainer has a concave surface which in a first position of the retainer receives the second end of the capsule when the first end has been inserted into the cavity with little compression of the spring, and the retainer is pivotable in an over-center manner to move the capsule against the spring force and into a second position in which the capsule is held firmly between the spring and the retainer, the retainer being prevented from moving beyond this second position.