ROHS environmental protection test What is ROHS?

Date：2023-01-10 14:37:33Views：572

RoHS is a compulsory standard formulated by EU legislation, and is a directive standard in CE certification. Its full name is the abbreviation of The restriction of the use of certain hazardous substances in electrical and electronic equipment. ROHS certification is also called environmental protection certification. RoHS certification actually refers to the test of a hazardous substance. This standard has been formally implemented since July 1, 2006, and is mainly used to standardize the material and process standards of electronic and electrical products, making it more conducive to human health and environmental protection. The purpose of this standard is to eliminate six harmful substances such as (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (CrVI), polybrominated biphenyl (PBB) and polybrominated diphenyl ether (PBDE) in electrical and electronic products, and the content of cadmium shall not exceed 0.01%. This article has collected and collated some materials, hoping to be of great reference value to all readers.

ROHS latest directive

The EU issued the latest ROHS directive 2011/65/EU on July 1, 2011, updating the previous 2002/95/EC directive.

Compared with the original directive, the differences between the 2011/65/EU directive and the original RoHS directive (2002/95/EC) are mainly as follows:

1. The scope of products has been expanded to include all electronic and electrical products within the scope of the Directive (including cables and spare parts), and category 8 products "medical equipment" and category 9 products "monitoring and control equipment including industrial monitoring and control equipment" have been added. The transition period of medical equipment, monitoring and control equipment is July 22, 2014, the transition period of external diagnostic medical equipment is July 22, 2016, and the transition period of industrial monitoring and control equipment is July 22, 2017. In addition, 20 exemptions have been given for these two types of products;

2. Clarified some definitions, deleted the definition of "manufacturer", and added the definitions of "manufacturer", "authorized representative", "importer" and "seller", and clearly defined their responsibilities. At the same time, it is stipulated that the manufacturer and importer must continue to register the electronic and electrical products that do not meet the requirements of the Directive and recalled, and transmit relevant information to the seller;

3. The scope of controlled substances has not been expanded, and the original limit requirements of six substances have been maintained. However, it is proposed that in the future review process, substances such as hexabromocyclododecane (HBCD), di (ethylhexyl) phthalate (DEHP), butylphenyl phthalate (BBP), dibutylphthalate (DBP) should be investigated in priority, paving the way for the order to expand the scope of controlled substances in the future;

4. CE mark and declaration of conformity. Before EEE products are put on the market, the manufacturer/importer/seller shall ensure that the relevant evaluation has been carried out according to the conformity evaluation procedure of 768/2008/EC Annex II Module A, and must affix the CE mark on the final product. Its relevant technical documents and EU declaration of conformity shall be retained for at least 10 years. The template of the declaration of conformity is given in Annex VI of the Directive. Find the Bestone Testing Center.

This Directive will enter into force on the 20th day of its publication in OJ. Member States need to translate it into their national laws before January 2, 2013. Directive 2002/95/EC and its amendments listed in Part A of Annex VII will be repealed from January 3, 2013.

What are the hazardous substances?

RoHS is aimed at electrical and electronic products that may contain (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (CrVI), polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) in all production processes and raw materials.

Since the latest version came into effect in July 2019, more substances (four kinds of phthalates) have been banned, including di (2-ethylhexyl) phthalate (DEHP), methyl phenyl butyl phthalate (BBP), dibutyl phthalate (DBP), and diisobutyl phthalate (DIBP) (referred to as 4P). However, the new RoHS restrictions on medical systems and monitoring and control instruments will take effect on July 22, 2021.

ROHS certification mainly involves products

The "electronic and electrical equipment" in the RoHS Directive refers to the equipment that is designed to use the voltage of AC not more than 1000V and DC not more than 1500V, and whose normal operation needs to rely on current or electromagnetic fields, as well as the equipment that realizes the generation, transmission and measurement of these currents and magnetic fields.

It mainly includes: daily household appliances, such as refrigerators, washing machines, microwave ovens, air conditioners, vacuum cleaners, water heaters, etc., black household appliances, such as audio and video products, DVD, CD, TV receivers, IT products, digital products, communication products, etc; Electric tools, electric electronic toys, medical electrical equipment, electric power used, including small and large household appliances, IT and telecommunications equipment and consumer goods, such as radios, televisions, cameras and audio systems.

1. Examples of lead (Pb) using this substance: solder, glass, PVC stabilizer

2. Examples of mercury (Hg) (mercury) using this substance: thermostat, sensor, switch and relay, bulb

3. Examples of cadmium (Cd) using this substance: switch, spring, connector, housing and PCB, contact, battery

4. Example of hexavalent chromium (Cr 6+) using this substance: metal anti-corrosion coating

5. Examples of polybrominated biphenyls (PBBS) using this substance: flame retardant, PCB, connector, plastic shell

6. Examples of polybrominated diphenyl ether (PBDE) using this substance: flame retardant, PCB, connector, plastic shell

RoHS certification test items and regulatory requirements

The content of each homogeneous material shall not exceed the following limits:

Lead: limit 1000ppm;

Mercury: limit 1000ppm;

Hexavalent chromium: limit 1000ppm;

Cadmium: limit 100ppm;

Polybrominated biphenyls (PBB): limit 1000ppm;

Polybrominated diphenyl ether (PBDE): limit 1000ppm;

Di (2-ethylhexyl) phthalate (DEHP): limit 1000ppm;

Dibutyl phthalate (DBP): limit 1000ppm;

Butyl phenyl phthalate (BBP): limit 1000ppm;

Diisobutyl phthalate (DIBP): 1000ppm.

ROHS certification is divided into:

1. ROHS chemical test: applicable to single material components or finished products with very simple materials

2. ROHS chemical test+scanning: applicable to products with complex materials, parts of the whole machine whose ROHS pass condition is unknown, and the whole machine needs to be tested or found out

3. ROHS scanning: applicable to products with very complex materials and limited detection budget

4. ROHS integration: It is applicable to some cases where there are many materials and the components of the machine have ROHS test reports.

Applicable region and product range

EU member states: France, Germany, Italy, Netherlands, Belgium, Luxembourg, Denmark, Ireland, Greece, Spain, Portugal, Austria, Sweden, Finland, Cyprus, Hungary, Czech Republic, Estonia, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia, Bulgaria, Romania.