The Restriction of Hazardous Substances (RoHS) and Waste Electrical and Electronic Equipment (WEEE) Directives of the European Union were introduced to minimize the accumulation of hazardous waste in landfills from the disposal of electrical and electronic equipment. The concentrations of hazardous substances such as lead, cadmium, mercury, chromium VI, polybrominated diphenylethers (PBDEs), and polybrominated biphenyls (PBBs) are restricted in electrical and electronic products and/or components. RoHS/WEEE states that if the component can be mechanically separated, then each component is subject to the RoHS limits. The definition of exactly what this means is an ongoing process. However, one thing is certain; in order to get an accurate analytical result, these products and components must be reduced to homogenous, representative samples. Many components such as circuit boards, wire, solder, polymers and resins are difficult if not impossible to grinding using traditional methods. Cryogenic grinding in the 6770 Freezer/Mill® and the 6870 Large Freezer/Mill® is often the easiest way to homogenize these materials. The end plugs and impactor of the standard Freezer/Mill® grinding vials are made of 440C stainless steel. This type of steel contains 16-18% Cr metal which could potentially contaminate the samples. This poses an issue because Chromium VI (a restricted substance) cannot be distinguished from Cr metal by XRF, ICP, and other common analytical techniques. Hence the new Cr-Free Grinding Vials, whose end plugs and impactor are made from chromium-free steel, were designed to insure that any Cr found in a sample originated there, and not in the grinding vial. A detailed Application Note describing the use of the Freezer/Mill® for RoHS/WEEE is available.