Melting into a bar

In order to analyse a given sample of dental gold, we melt the different elements into a homogeneous bar. We do this in a vacuum induction oven, so that optimum purity is ensured. Dirt and waste are removed with the introduction of a fluxing agent. The residue of this melting, called “slag,” (metal sponge),  is retained by us for three months. We do this in case we decide to ask another technician to analyse the material, if there is any uncertainty.