Velp Indonesia provide Mineralization system for heavy metals trace determinations. The environmental risk represented by trace metals is due to their toxicity but also to the possible bioconcentration that can reach human beings through the food chain. Monitoring the presence of trace metals in sludge from water-treatment plants requires a host of analytical procedures starting from the solubilization of metallic compounds. The TMD 6 is designed for the hot digestion of sludge coming from water treatment plants, soil, compost, waste-water or vegetable materials, using "aqua regia". Thanks to the use of water-jacketed condensers there is no loss of mercury, cadmium, lead, chromium, copper, zinc, etc. during hot mineralization. The TMD 6 is combined with the DK 6 to perform sample digestion.