Analysis of EEE (electrical and electronic equipment) comprise a variety of sample types, substances to be determined and analytical techniques, the latter including different methods for preparing and chemically decomposing the sample prior to the instrumental measurement. ALS Scandinavia has, since the first method development work in 1999, gained considerable experience in analysis of EEE on a contract basis.
Some features of our services are:
- Care is taken to define, together with the customer, which parts shall be analyzed, which substances shall be determined, and under which conditions
- Samples received, as well as all disassembled or removed parts (e g steel covers), are accurately accounted for by weighing.
- Homogeneous materials are analyzed as received or after separation from products or product parts, while larger, inhomogeneous units, e.g., circuit boards, can be homogenized by grinding to enable representative subsampling. If a banned substance is detected in the subsample, further investigation is needed.
- The samples are acid digested before the elemental analysis, by a method which enables quantitative determination of many metals.
- Use of analytical techniques with very low limits of determination (reporting limits), often far below MCV - this not only favours reliability at MCV levels, but enables informative calculations of “highest possible percentage of non-compatible material” in non-homogeneous units.
- Report formats and contents are, on request, defined together with the customer.
It should be noted that there is a number of applications of the metals that are exempted from the requirements; these are specified in an Annex to the directive. For details, please refer to this text.