About ZERA


Precision is our passion. Our certifications demonstrate this.

If you would like to see or download one of our certificates click here.


Since the year 2000, ZERA has been operating its own calibration laboratory (D-K-15103-01-00) accredited by DAkkS. Through regular auditing, traceable standards as well as clearly defined surrounding conditions, the DAkkS accreditation guarantees a high quality of calibration according to DIN EN/ ISO IEC 17025:2018.

The accreditation allows us to calibrate the following quantities for measuring electricity:

  • Direct current and low frequency
  • Direct voltage
  • Alternating voltage
  • Alternating current
  • Electrical power
  • Electric energy
  • Phase angle


ZERA works according to the guidelines for achieving quality management that are established in the international norm ISO 9001:2015. This way we optimize the performance of the company and guarantee high customer satisfaction. The ZERA GmbH has been certified by TÜV Rhineland and is audited regularly.

System for managing workplace safety

Keeping the workplace safe and protecting the health of our more than 100 employees means a lot to us. By organizing these areas systematically, we further productivity, performance and the commitment of our workforce. Only in this way can we fulfill the highest quality standards.

The professional association has certified ZERA GmbH’s workplace safety management system.

Certificate of sustainable & recyclable raw materials

ZERA has joined the BRAMIN concept. The application of this concept helps to protect the environment. The installed raw material baling press saves truck transports due to a lower volume of recyclable material. Source sortin increases the proportion of recyclable material.

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