PerQuat Technology


Sterilex’s proprietary PerQuat technology is the first and only chemistry with products approved by the EPA to kill biofilm bacteria and remove biofilm in public health and industrial applications.* PerQuat-based products are available in solid or liquid form.

Sterilex’s proprietary PerQuat technology is based upon a unique alkaline peroxide, phase transfer chemistry comprised of a synergistic combination of a peroxygen compound, a phase-transfer agent which possesses antimicrobial activity, and other formulation components which enhance cleaning and biofilm removal. PerQuat technology has the unique ability to penetrate and remove biofilms, kill microorganisms within biofilms as well as on surfaces (such as Listeria, Escherichia Coli (E.coli), Salmonella, Pseudomonas), and remove organic contaminants.*

Biofilm, as the natural habitat for bacteria on all surfaces, is an important vector of transmission of microorganisms in any system. Simply killing free-swimming and biofilm-related microorganisms, without removing the biofilm structure from a surface, can result in rapid recolonization of organisms inside of the remaining biofilm matrix.  Sterilex’s proprietary PerQuat technology not only provides broad spectrum kill of free-swimming and biofilm organisms, it also breaks up and removes the biofilm structure from a surface, preventing rapid recolonization. The multiple physical and chemical mechanisms of action of the proprietary PerQuat technology reduces the risk of microbial resistance to Sterilex products.*

Sterilex is the first company granted EPA registered biofilm claims on its products and was a leader in providing proven, EPA registered products with anti-biofilm activity to the marketplace.

The Power of PerQuat® Technology


Biofilm polysaccharide matrix

Attacks and bombards biofilm.

perquat penetrates the outer layer and dissolves into the matrix

Penetrates the outer layer and dissolves into the matrix.

Destruction and elimination of biofilm by a unique combination of oxidation, hydrolysis, and solubilization

Destruction and elimination of biofilm by a unique combination of oxidation, hydrolysis and solubilization.


Sterilex is a third generation, family-owned company that began when one of the inventors of the company’s core technology launched a scientific research company following his retirement as a chemist. The company won a military contract to develop a universal decontaminating technology for biological and chemical warfare agents. In the process, the technology team learned more about the microbiology of biofilms and their role in developing resistant microorganisms, so they focused on developing a core technology that could penetrate and dissolve biofilm and kill the bacteria living within it. Recognizing the broader commercial applications for these products in the areas of health care and animal and food processing environments, Sterilex was launched in 1995.

Sterilex has since developed a line of proprietary, award-winning biofilm-control biocides, broad spectrum disinfectants and rapid biofilm diagnostic tools that can be used in a variety of applications such as food and beverage protection, animal health, and water treatment applications.Sterilex patented

Sterilex’s proprietary PerQuat® technology has the unique ability to penetrate and remove biofilms, kill microorganisms in biofilms (such as Listeria, E.coli, Salmonella, and Pseudomonas), and remove organic contaminants.*

( Animation showing how PerQuat® can penetrate and remove biofilm )


Science and medical background.

Sterilex R&D

Sterilex has a core commitment to innovation, and to developing differentiated, high-performing products.  Sterilex products have been recognized as groundbreaking in their ability to solve difficult microbial control challenges, leading to safer end products and processes, longer shelf life, and greater productivity.  The company’s track record in developing the first products to demonstrate efficacy and achieve EPA registrations against bacterial biofilm (both public health and non-public health use sites) exemplifies Sterilex’s success in translating entrepreneurial concepts, based upon industry needs, into valuable products.  Sterilex’s culture of innovation blends ‘small company’ creativity and flexibility with ‘big company’ control processes, and reflects a collaborative spirit within Sterilex and with our customers.

Sterilex’s R & D activities are carried out in our own state-of-the art laboratories in Hunt Valley, MD, and are staffed by PhD scientists and regulatory specialists.

Contact Us

We provide only the highest-quality products to advance your cleaning and sanitation program and are committed to customer service and training. Sterilex products are available in the US as well as several international locations. For more information, contact us at 1.800.511.1659 or use this form, and a representative will be in touch with you as soon as possible.

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* The content provided on this webpage is provided for informational purposes only and does not supersede the product label requirements. Approved label claims may vary depending on geography, use site, organism, or other factors. Always refer to the product label for complete directions for use.
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