Certification and Testing

Zhaga certification indicates that a product has been tested by an independent test lab, and is fully compliant with all the requirements of one of the Zhaga Books. 

The use of a Zhaga logo on a product indicates that certification has been achieved. The logo conveys the meaning of interchangeability. 

All Zhaga-certified products are listed in the Certified Products database. The listed products are the only ones entitled to carry the Zhaga logo.

Authorized Testing Centers

Testing for Zhaga compliance is carried out by independent test labs that have been authorized by Zhaga. Separate authorization is required for each specific Book and each specific location.

The Authorized Testing Centers for each Book are listed below.

Book 2
  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR Arnhem, The Netherlands
  • UL LLC, 7036 Snowdrift Road, Allentown, PA 18106, USA
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany
Book 3
  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR Arnhem, The Netherlands
  • UL LLC, 7036 Snowdrift Road, Allentown, PA 18106, USA
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany
Book 4
  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR Arnhem, The Netherlands
  • UL LLC, Via XXV Aprile, 3/B, 20875 Burago di Molgora (MB), Italy
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany
Book 5
  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR Arnhem, The Netherlands
  • UL LLC, 7036 Snowdrift Road, Allentown, PA 18106, USA
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany
Book 6
  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR Arnhem, The Netherlands
  • UL LLC, 7036 Snowdrift Road, Allentown, PA 18106, USA
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany
Book 7
  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR Arnhem, The Netherlands
  • UL LLC, Via XXV Aprile, 3/B, 20875 Burago di Molgora (MB), Italy
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany
Book 8
  • DEKRA Certification B.V., Utrechtseweg 310, 6812 AR Arnhem, The Netherlands
  • UL LLC, 7036 Snowdrift Road, Allentown, PA 18106, USA
  • VDE Testing and Certification Institute, Merianstrasse 28, 63069 Offenbach, Germany

Becoming an Authorized Test Lab

Zhaga certification is managed by the Zhaga Logo License Administrator (Zhaga-LLA). The Zhaga-LLA issues product certificates, authorizes test labs, monitors compliance, and acts against inappropriate use of the Zhaga logo.

Authorized Test Labs are governed by the rules in the Zhaga Testing Center Agreement. A reference copy of this Agreement is available in our Download Center.

The key steps in becoming an Authorized Test Lab are as follows:

Step 1:

A company that operates one or more test labs signs the Zhaga Testing Center Agreement with the Zhaga-LLA.

The Zhaga-LLA will sign this Testing Center Agreement with any company that meets the following criteria:

  • the company is a member of Zhaga
  • the company owns and/or controls one or more testing facilities that are accredited by an accreditor that is a full member of ILAC MRA.

Step 2:

Test labs owned by companies that signed the Zhaga Testing Center Agreement do not automatically become an Authorized Test Lab.

Each test lab must be authorized separately, in accordance with the procedure set out in article 3.1 and Annex C of the Zhaga Testing Center Agreement. 

Testing Center Agreements

The Zhaga-LLA has concluded Testing Center Agreements with the following companies: