Household appliances placed on the EU market fall within the scope of RoHS 2, Directive 2011/65/EU, which restricts hazardous substances in electrical and electronic equipment. RoHS 2 compliance for household appliances testing verifies that each homogeneous material in a refrigerator, washing machine, kettle, or vacuum cleaner conforms to the substance limits defined by the directive. The evaluation covers the legal basis and product scope, the restricted substance list and limit indicators, dissection of samples into homogeneous materials, and the analytical procedures of the IEC 62321 series performed with ICP-MS and GC-MS instrumentation. Method performance is examined through detection limits, precision, and recovery, after which results are translated into compliance judgment and CE marking documentation. A structured test programme of this kind allows manufacturers to demonstrate conformity, control substance risk across the supply chain, and maintain continuous market access within the European Economic Area.
scope and directive basis
RoHS 2, formally Directive 2011/65/EU on the restriction of hazardous substances in electrical and electronic equipment, replaced the original 2002/95/EC directive and widened the scope of regulated products. The directive applies to equipment dependent on electric currents or electromagnetic fields at rated voltages up to 1000 V AC and 1500 V DC. Household appliances occupy the first two categories of Annex I. Large units include refrigerators, washing machines, and cookers; small units include vacuum cleaners, irons, toasters, and hair care devices. Amendment (EU) 2015/863 enlarged the restricted list from six to ten substances, and the expanded list has applied to consumer appliances since July 2019. The framework is transposed into the national law of every Member State and operates alongside the WEEE collection regime. Harmonised standard EN IEC 63000 specifies the technical documentation used to demonstrate conformity, and laboratory reports are compiled in that format.
Restricted substances and limit indicators
Annex II of the directive lists ten restricted substances. The original six are lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ethers. Four phthalates were added by Amendment (EU) 2015/863: bis(2-ethylhexyl) phthalate, butyl benzyl phthalate, dibutyl phthalate, and diisobutyl phthalate. Each substance is limited to 0.1% (1000 mg/kg) by weight in homogeneous material, with a stricter ceiling of 0.01% (100 mg/kg) for cadmium. The unit of judgment is the homogeneous material rather than the component or the finished appliance, so a single plated screw can decide the outcome. Applications listed in the exemption annexes remain permitted until an exemption expires or is renewed, and the current status must be checked before reporting. Analytical results are compared against these thresholds with measurement uncertainty taken into account, and a confirmed exceedance in one material classifies that material as non-compliant.
Sample types and homogeneous material dissection
Typical submissions range from complete appliances and internal subassemblies to cables, connectors, plastic housings, printed circuit boards, and fasteners received as supplier samples. Preparation follows the sampling principles of the IEC 62321 series, in which each specimen is separated into materials that cannot be mechanically disjointed any further. In practice this means removing insulation from conductors, detaching plating or coating layers where feasible, and isolating solder joints from pads and component bodies. Metallic fractions are cut or milled to a particle size suitable for acid digestion. Polymer fractions are shredded or cryo-milled at low temperature, which avoids thermal degradation of phthalates and brominated flame retardants. Each dissected fraction is assigned an identity, photographed, and weighed so that results remain traceable to a specific material within the appliance. Screening of numerous fractions by X-ray fluorescence narrows the workload before confirmatory chemistry begins, which controls cost without weakening the evidence base.
IEC 62321 series methods — ICP-MS and GC-MS
The IEC 62321 series defines the reference procedures for measurement of the restricted substances. Screening by X-ray fluorescence, performed under the relevant part of the series, sorts materials into pass, fail, and inconclusive bands. Confirmatory testing then concentrates on fractions that screen high or inconclusive. For lead, cadmium, and mercury, weighed portions are digested in microwave vessels with concentrated mineral acids until the matrix dissolves. The resulting solutions are measured by inductively coupled plasma mass spectrometry against calibration standards, with internal standards correcting drift and matrix suppression. Brominated flame retardants and the four phthalates are determined by gas chromatography with mass spectrometric detection. The polymer is extracted in an organic solvent such as toluene or dichloromethane. The extract is cleaned where required, and target analytes are quantified in selected-ion monitoring mode against calibration solutions. Hexavalent chromium follows a separate route: boiling-water extraction of plated or coated surfaces and colorimetric measurement, because total chromium data alone cannot establish the Cr(VI) content.
Detection limits, precision and recovery
Method performance decides whether a result can be reported with confidence. Quantification limits for the metals by ICP-MS sit an order of magnitude or more below the regulatory thresholds, placing the decision point well inside the calibrated range. Precision is demonstrated through replicate digestions of the same homogeneous fraction, with relative standard deviations reported alongside the mean concentration. Accuracy is verified with certified reference materials where the matrix matches and with spiked samples where it does not. Recoveries must fall within the acceptance band set in the method validation file before data are released. Procedural blanks, calibration verification standards, and continuing calibration checks bracket each analytical batch, so that drift is detected during the run rather than after reporting. An estimated measurement uncertainty accompanies every confirmatory value, because a concentration lying within uncertainty of the limit cannot justify a definitive pass or fail conclusion.
Compliance judgment and CE marking support
Judgment proceeds material by material. Any homogeneous fraction with a confirmed concentration above its limit renders the appliance non-compliant, unless a valid exemption covers that specific application. The test report records the sampling points, the dissection scheme, the results with uncertainty, and the conclusion for each material, forming an auditable record for the manufacturer. Under the conformity assessment model applicable to household appliances, the manufacturer draws up the technical documentation and the EU Declaration of Conformity, then affixes the CE marking. RoHS requirements are integrated into that file alongside the safety and electromagnetic compatibility assessments required for the same product. Test data are cross-checked against supplier material declarations. Retesting is triggered by a design change, a new supplier, or the expiry of a relied-upon exemption. Maintained in this way, the documentation withstands market surveillance inquiries and keeps the appliance on sale across the European Economic Area.