For our assessments of soil, water, building materials, and waste, we place the highest value on qualified sampling. Our comprehensive quality management system, in accordance with DIN EN ISO/IEC 17025:2018, is accredited by DAkkS (German Accreditation Body) and is continuously reviewed through surveillance audits (approximately every 1.5 years). Every 5 years, a complete review of all sampling procedures and the management system is required ("repeat assessment," formerly "reaccreditation").

During the audit in July 2023, two auditors from DAkkS were on-site for two days each, thoroughly examining all processes in detail. In a letter dated November 3, 2023, DAkkS confirmed the maintenance of our accreditation. Quotes from the audit report:
All employees authorized for sampling possess the necessary skills and abilities to competently and professionally conduct sampling in accordance with standards. The team responsible for soil sampling performs the technical tasks routinely.
The employees are distinguished by their solid professional training.
The familial entrepreneurial mindset is particularly noteworthy. It enables the creation of a stable, low-turnover foundation. This resulting continuity is also reflected in the management system, which is demonstrably actively practiced and continuously developed.
For more information, please visit management system.

