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John Rozembersky
Over 30 years of Professional TFF solutions experiance
John Rozembersky is CEO and President of The Rozembersky Group, an independent consulting firm he
formed in the spring of 2005.

The mission for his consulting firm is to be a dedicated and total tangential flow filtration (TFF) solutions
provider to the biopharmaceutical applications market.  With his hands-on experience and in-depth
knowledge for filtration and purification spanning close to 30 years, John is internationally recognized as a
leading authority in TFF in the Biopharmaceutical sector from bench-top development to large scale
One of John Rozembersky’s many recognized career
accomplishments and achievements was as  co-founder for the
highly successful TFF company, Filtron Technology Corporation.  
During the decade following the start-up of Filtron in 1985, Filtron
grew to a multi-million dollar worldwide leader in TFF providing
membrane products and systems with developed leading-edge
technologies.  As a key technical principle, John contributed to the
success of Filtron through his development of a state-of-art
membrane manufacturing casting process and his co-
development for the proprietary membrane chemistries that led to
the most extensive line of UF and MF tangential flow filtration
membrane products available by any one company.
As TFF processes emerged to the top as a key unit operation on the critical path for most biopharm product
purification schemes, John directed his expertise in the past two decades towards providing direct field
support for sales and customer technical applications, both domestic and international.  His hands-on
approach and applied common-sense principles helped successfully define, design, optimize and
trouble-shoot well over 600 downstream purification biopharm applications in TFF.  John continues to be
very involved in the design and scale-up of TFF systems from lab to pilot to manufacturing in applications
that include: plasma and protein fractionation, vaccines, recombinant proteins purification, virus removal and
cell harvesting applications.  His system designs and application protocols, developed over the past two
decades, have become standards used by many today.
In 1995, Filtron was acquired by Pall Corporation and John
remained as VP of Global TFF Technologies supporting the
technology transfers and all worldwide TFF technical and
application support to biopharm customers.    

John, also an accomplished former professional soccer player, and
who has ran and finished 17 marathons, completed both his BS
and MS studies in Chemical Engineering at the New Jersey
Institute of Technology.
2006 Rozembersky Group Inc.
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