Vooroordelen  Fabrikanten, distributeurs en leveranciers

Our many years of experience in the construction of numerous biogas systems for agricultural businesses and industry, water treatment systems, pumping stations and waste water treatment systems guarantees you the expert and quality management of your project.
You obtain all services from a single source: beginning with the planning through to supervision of the project and the follow-up service.
The installation of the most important construction elements such as the control equipment is carried out direct by our employees. For some works, we use the support of our qualified partners.
Through the use of the latest scientific findings, and always keeping economic and ecological aspects in mind, you always benefit from the maximum degree of operating reliability, and system constructed to the latest state of the technology.
We are a certified specialist business in accordance with § 19 Wasserhaushaltsgesetz (German water management regulations). We check our working procedures by continuous self-monitoring to DVS. We are also continually monitored from outside by the TÜV

The company Erich Stallkamp ESTA GmbH developed products and systems for the
industry, commune and agriculture since 1973. More than 140 employees plan,
develop, construct and produce
• Stainless steel storage tanks
• Waste water systems
• Tanks for Biogas-Systems
• Covers out of GFK, PVC and metal
• Working platforms, gangways and ladders
• Longwave-Pumps
• Submersible-Pumps
• Rotary-Piston-Pumps
• Longwave-Agitators
• Submersible-Agitators
• Different kind of accessory

BlueSens makes sense!
On July 1st in 2001 Udo Schmale and Holger Müller founded BlueSens gas sensor GmbH in Herten, Germany. Both founders are still managing directors of the company.
More than 15 years ago the electrical engineer Udo and Holger, a chemist, decided to collaborate. During the 90s they did their PhDs on infrared-measurement technology at the Institute for Chemo- and Biosensors at the Westfälischen Wilhelms-Universität in Münster.
For more than 20 years the inventive heads of the company have been working on the development, manufacturing and application of modern gas measurement technology. At an early date of their collaboration they realized the market potential of their smart measuring solution, decided to have it patented, and founded BlueSens gas sensor GmbH.
From this very first start BlueSens focuses on the needs of the customer and emphasizes on a close relationship with customers.