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As of December 22, 2025, ROBU Glasfilter-Geräte GmbH will operate under the new legal name STEREON Glassfilters GmbH as part of a group-wide rebranding. Our parent company, QSIL SE, will simultaneously appear under the new umbrella brand STEREON MATERIALS. The new name STEREON Glassfilters reflects our stronger integration into an internationally positioned materials group and supports a clearer, unified external presence across the group.
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Effective February 1, 2025, Benjamin Schmidt will assume the role of Managing Director at STEREON Glassfilters GmbH. Mr. Schmidt has been with the company since 2023 as Technical Manager, responsible for production, innovation, technology, and laboratory operations.

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ROBU® is the brand name for a complete line of sintered glassfilter elements made of borosilicate glass 3.3 and quartz glass.

ROBU® sintered glassfilters meet the internationally established standards for porous sinterfilters according to ISO 4793 and borosilicate glass 3.3  according to ISO 3585 as well as the American Standard ASTM E 128 and the British Standard BS 1752.

Standard ROBU® Sinterfilters and Laboratory glassware - we are happy to work together with you in designing the best solutions for all your individual needs - quickly and effectively.