BOLL & KIRCH is a global specialist in the filtration of liquids and gases, offering customized and sustainable solutions for over 70 years. Certified to DIN ISO 9001, ISO 14001, and ISO 45001, we are recognized by leading classification societies.

Our BOLLFILTERs serve a wide range of industries, including key roles in the hydrogen value chain. With in-house R&D, we collaborate closely with customers to optimize filtration applications and maintain our technology leadership through patents and utility models.

We’ve recently expanded into membrane filtration, enabling filtration up to 100 times finer than before—marking a major innovation in our field.

BOLLFILTERs contribute significantly to sustainability by conserving resources, reducing environmental impact, and maximizing material efficiency—helping improve living conditions across their areas of application.