General Disassembly Requirements for Testing Hazardous Substances in Electrical and Electronic Products

In the detection of hazardous substances in electronic and electrical products, the sample separation process has a direct impact on the detection results. This standard refers to the European Union definition of homogeneous materials for sample separation, the sample is divided into the final submission of testing units, and then tested. For non-homogeneous materials that are difficult to be separated by mechanical means, according to certain conditions, such as quality, объем, и т. д.. that meet the minimum limits specified in this standard, they can be directly submitted for testing without further splitting. This standard illustrates the principle of splitting by means of examples and illustrations

General Disassembly Requirements for Testing Hazardous Substances in Electrical and Electronic Products

Split principle

The goal of separation is to obtain the homogeneous materials that constitute electronic and electrical products through appropriate means of separation. It is necessary to adopt appropriate splitting means to obtain homogeneous materials to ensure that the splitting results will not be misjudged due to improper splitting when used for subsequent tests.

2.Multiple modules, parts or components of the same function and specifications (параметры) produced by the same production plant can be grouped into one class, from which a representative sample is selected for splitting. Different parts produced by using the same material (including substrate and additives) can be regarded as a test unit.

3 Materials with different colors should be divided into different detection units.

4 Items or materials in the list of exemptions specified in relevant laws and regulations should be identified at the time of splitting.

5 When the split object is difficult to be further split and weighs s10mg, it does not need to be split, and is directly submitted for testing as a heterogeneous testing unit.

When the split object is difficult to be further split and the volume s1.2mm3, it is not necessary to split, and the whole system sample can be completed (такой как: 0805 chip components 2.0×1.2×0.5mm components do not need to be split) as a heterogeneous detection unit, directly submitted for testing,

7 surface treatment layer should be separated from the body as far as possible (such as coating) : for really can not be separated (such as coating) Can be the surface treatment layer for preliminary screening (such as the use of X-ray fluorescence spectrometer (РФА) and other means), screening qualified is not separated: screening unqualified, can be separated by non-mechanical methods (such as the use of soluble surface treatment layer and can not dissolve the body material chemical solution dissolution extraction).

8 Under the premise of meeting the effectiveness of the test results, when the sample cannot meet the demand for detection after being split, it can be properly classified, prepared together, and submitted directly for testing