- 1977: The foundation stone was laid when the Ehrler & Beck company was founded in Stuttgart – Renningen
- 1983: Establishment of Ehrler Prüftechnik – moving into the first company premises in Leinfelden-Echterdingen
- 1990: Relocation of the company location to Steinbronn
- 1999: Relocation to the rural Mulfingen-Zaisenhausen
- 2005: EP receives the first ISO certification
- 2006: Start of the calibration laboratory: Foundation of the subsidiary EP Instruments Messtechnik & Kalibrierung
- 2007: First audit for the DAkkS certification according to DIN EN ISO/IEC 17025 for the flow calibration of flowing gases successfully carried out
- 2008: Start and move into the first company premises in Niederstetten, 50 kilometers south of Würzburg
- 2016: Groundbreaking for the new building on more than 1200 square meters of additional usable space in Niederstetten: Relocation of the calibration laboratory to Niederstetten & expansion of the office and assembly areas
- 2018: Subsidiary of Dr. Födisch Umweltmesstechnik AG
- 2019: EP Instruments Messtechnik & calibration GmbH merges with EP Ehrler Prüftechnik Engineering GmbH
- 2020: Start of the calibration laboratory in Hangzhou, China
