VitraPOR® 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 VitraPOR® 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.

Materials specialist QSIL is growing again and expanding its portfolio in the quartz and special glass sector by acquiring ROBU, the leading manufacturer of sintered glass filter elements and glass filter devices.
The QSIL Group is an innovative, internationally active materials specialist for the development and production of a broad portfolio of high-performance materials. Among other things, QSIL specializes in the production of high-purity quartz glass, special glasses, technical ceramics and high-performance metals.
With more than 1,000 employees in Germany, The Netherlands, England and China, QSIL generates annual sales of over 200 million Euros.
QSIL has a globally diversified customer base, including large blue chip clients from Europe, Asia and America.

Please note that new prices will apply from January 1st, 2023. New pricelists for standard products can be found in our Service/Downloads-area.
Orders with a confirmed delivery date in 2023, will be executed at the new 2023 prices. Prices may have to be adjusted on short notice due to unforeseen market conditions.