ROHs Compliance Testing: A Comprehensive Guide to ROHs Lab Testing

ROHs Compliance Testing refers to the testing of harmful substances in electronic and electrical products to ensure that the products meet the requirements of the EU ROHS directive.

The ROHS directive is an environmental protection regulation formulated by the European Union, which requires that the content of harmful substances such as lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers in electronic and electrical products must not exceed the specified limit.

ROHS is usually abbreviated as R&H, which refers to a regulation officially promulgated by the European Union on July 1, 2002, namely the “Directive on Restricting the Use of Hazardous Substances in Electrical and Electronic Products”, in order to control the abuse of residual hazardous substances in electrical and electronic products , the possibility of causing pollution to the environment.

It bans the use of six poisonous metals in consumer electronics, including fluoride, lead, cadmium, arsenic, copper, mercury and six copolymers.

According to relevant regulations, if the product contains ingredients that are harmful to the ecological environment, it must pass the ROHs laboratory test to ensure that the product meets the ROHS standard. The principle of ROHS testing is to ensure that products meet the requirements through quantitative analysis of various toxic substances. This laboratory testing covers a wide range, including electronic and electrical products, surface treatment products, environmental protection products, coatings, and plastic products.

The purpose of ROHS lab testing: The purpose of ROHS certification is to prevent the components and materials in electrical and electronic equipment from being mixed and used with prohibited substances, plan to abolish substances, and reduce substances (hazardous substances) in environmental management substances, to protect the global environment and reduce environmental impacts. To protect human health and maintain the sustainable and healthy development of human society.

Methods commonly used in ROHS lab testing include X-ray fluorescence spectroscopy, atomic absorption spectroscopy, ion chromatography, etc. These methods can accurately detect the content of harmful substances in electrical and electronic products, and determine whether they meet the requirements of the ROHS directive.

It mainly includes the following contents:
1. The content limit of ten kinds of harmful substances stipulated in the ROHS directive:
Lead (Pb): 0.1%
Mercury (Hg): 0.1%
Cadmium (Cd): 0.01%
Hexavalent chromium (Cr6+): 0.1%
Polybrominated biphenyls (PBB): 0.1%
Polybrominated diphenyl ethers (PBDE): 0.1%
Tetrabromobiphenyl ether (PBBS): 0.1%
Hexabromodiphenyl ether (HBCDD): 0.1%
Diphenyl ether (DEHP): 0.1%
Benzopyrene (BaP): 0.1%

ROHS lab testing needs to detect the content of these harmful substances in electronic and electrical products to meet the above regulations.

In the ROHs Compliance Testing steps, it mainly includes five steps: screening materials, sample pretreatment, sample quantitative analysis, analyzing quality curves and data correction. Screening materials refers to the analysis of whether the six poisonous metals remaining in the materials exceed the standard, so as to identify the samples for comprehensive detection and research.

1.Sample pretreatment refers to further pretreatment of the test object, such as grinding, heat treatment, mitigation or antipyretic, etc., for accurate measurement.

2. Quantitative analysis steps, generally, AAS (atomic absorption analysis) technology is used, which can accurately detect the amount of harmful substances, and mark it on the report for reference.

3. Draw the analytical quality curve from the analysis and measurement results, that is, the relationship between the composition and quantification of harmful substances, so as to judge the content and residue of each substance more accurately.

4. Data correction, which is to adjust and process the original analysis data according to the analysis quality curve and the data reflected by various uncertain factors, so as to obtain better detection precision and accuracy, and obtain ROHS information.

Notes on ROHS testing:
1. Sample collection: Sample collection should be as comprehensive as possible, including all parts of the product, to ensure the accuracy of the test results.

2. Testing instruments: choose the appropriate testing instruments to ensure the accuracy and reliability of the test results.

3. Testing standard: ROHS testing needs to follow the requirements of the EU ROHS directive, and the testing standard should comply with the requirements of the EU ROHS directive.
4. Testing personnel: ROHS testing requires professional testing personnel to operate to ensure the accuracy and reliability of the testing results.

5. Testing cycle: ROHS testing needs to be carried out regularly to ensure that the quality of the product meets the requirements of the ROHS directive.

Benefits of ROHS Testing:
1. There are many benefits for electronic product enterprises to carry out ROHS certification, including reducing the amount of heavy metals and hazardous substances used in electronic products, because when there are more hazardous and toxic substances, they will not be able to pass the ROHS certification, so the environmental protection level of domestic electronic products will unconsciously be improved.

2. When more enterprises start to carry out ROHS certification, many obsolete electronic products that do not meet the standards will be directly recycled, which also reduces the content of hazardous substances in the electronic products used in the market at present.

3. With the popularity of ROHS certification, another benefit is that when enterprises value ROHS certification, research in scientific research will be indirectly promoted, trying to achieve the replacement and reduction of hazardous substances.

4. Furthermore, since ROHS certification was proposed by the European Union, with the domestic enterprises start to pay more attention to ROHS certification, the most direct benefit is that parameters and indicators start to be aligned with the international standards, especially enterprises that want to firmly stand in the European market, naturally need to carry out ROHS certification, and this certification has legal effect, so enterprises can get corresponding legal protection after ROHS certification, and can also increase the recognition of customers.

ROHs Compliance Testing is an important means to protect the environmental protection of electronic and electrical products. It is necessary to strictly abide by the testing procedures and precautions to ensure the accuracy and reliability of the test results. At the same time, ROHS testing is also an important way for enterprises to improve product quality and environmental protection awareness, and should attract the attention of enterprises.

1. RoHS Compliance Testing:
• RoHS testing of electronic appliances
• Alloy manufacturing RoHS test
• RoHS testing of coating and plating
• RoHS testing of plastics and plastic parts
• Various hazardous element testing area

RoHS Testing Equipment EDX-2A

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