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N Mark for reusable polyethylene bags
N Mark of quality for reusable polyethylene (PE) bags to transport retail products

N Mark for reusable polyethylene bags

N Mark for reusable polyethylene bags

The N Mark for reusable polyethylene (PE) bags for transporting retail products certifies the characteristics that reusable commercial plastic bags must have

​​​​​​​​​​​​​The AENOR​ N Mark and the AENOR Environment Mark for reusable polyethylene (PE) bags for transporting retail products certifies the characteristics that these reusable commercial plastic bags used for transporting retail products must fulfil. This process contemplates the environmental aspects and testing methods necessary for determining the characteristics a bag must have for a minimum of 15 uses under normal conditions.​

AENOR product certification for bags offers:

  • Useful product benefits: These bags have greater capacity and strength than traditional bags, meaning less bags are needed and consumption is reduced. They can be reused a minimum of 15 times

  • Environmental benefits: The bags are made with 100% recyclable material; 15% of the material used to produce the bags is recycled. They are printed with environmentally-friendly ink. Production involves reduced energy and water consumption. Because they are subject to the ENCOEMBES Green Dot, which oversees their collection and recycling, they support waste recycling.

The N Mark covers reusable polyethylene (PE) bags (t-shirt-style bag with die-cut handles) for transporting retail products, in accordance with the Standard UNE 53942:2014

As a compliance assessor, AENOR is a leading product certification entity. With more than 100,000 certified references, the AENOR​​ N Mark is present in over 40 countries and is among the top 5 product quality markings in the world. 

The AENOR N Mark is a voluntary marking that allows a company to demonstrate that its product complies with specific provisions compiled in a UNE, EN or ISO standard or in a technical specification. This demonstration of compliance during the manufacturing and testing of the final products, based on a rigorous control performed by AENOR, will allow licensees of the Mark to put their products on the market with a high standard of quality, instilling confidence in the users of these certified products.


The AENOR Mark is voluntary. Companies that want AENOR to certify their product must submit their application in accordance with the formats established by AENOR. This application must include information about the company and the characteristics of the products for which certification is sought.

Once AENOR technical staff have analysed the documents, compliance assessment activities will be performed in order to verify that the products comply with the applicable standards:


A visit is made to the production centre to carry out the following procedures:

  • a) the quality management system is audited in accordance with the requirements that are set out in UNE-EN ISO 9001 and are directly related to the production process.
  • b) the manufacturer's production process and controls are inspected to ensure that the product meets the standard's requirements.
  • c) samples are taken and sent to an accredited laboratory that handles the testing included in the standards. The manufacturer sends samples identified by the auditor to the laboratory.


The laboratory performs the tests established by the standard and sends its report to AENOR.


Using all the information on the activities performed, the Plastics Certification Technical Committee (an independent body established by all the interested parties: manufacturers, the Administration, users, monitoring entities and AENOR) will either propose to AENOR that the Mark be granted, or request that one of the activities be repeated due to non-compliance.

Once the Certificate has been granted, the process will continue as the monitoring activities required to keep it must be performed. Samples will be taken, and audits, inspections and tests will be performed on an annual basis. The results are assessed each year by the Certification Technical Committee for Plastics, which decides whether a company retains their certification.

Once an organisation passes the certification process, it obtains: ​

  • The AENOR product certificate
  • A licence to use AENOR's Mark of a certified product, in accordance with the provisions of AENOR regulations
AENOR N Mark logo for a certified product​​​​​​

  • A licence for use of theto AENOR Environment, in accordance with the provisions of AENOR regulations


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