Certified Space Technology

ActivePure® Technology is a patented 24/7 air and surface disinfection system generating protective molecules that actively combat airborne and surface pathogens. These ActivePure® Molecules are created ’round the clock and disbursed throughout the environment via air circulation. They fill indoor spaces where they seek out and reduce any pathogens that enter and can be used in occupied spaces.

Humidity Consideration

ActivePure requires at least 30% humidity to produce these purifying molecules.

If you live in a dry area, you may need to purchase a humidifier to keep the humidity at an optimal level.

Current Strategies & Limitations

Ultraviolet light treatment has been shown to work well for disinfection of small areas, but not in central ventilation systems. Additionally, the indoor environment may be contaminated with low levels of toxic chemicals such as formaldehyde, styrene, and toluene. Ultraviolet energy does not work well in degrading these chemicals. [1]  UV/UV-C systems have been proven to reduce contaminants by 10-30% [2], but requires downtime for the room, employee training, considerable equipment costs, and can only be used for terminal disinfection when no one is in the room.


Hydrogen Peroxide has ample data regarding micro-biocidal activity and reducing HAIs, [3] and Hydrogen Peroxide Vapor (HPV) has a proven effectiveness against C. diff and more, reducing pathogens from 25.6% down to 0%. [4] Disadvantages include considerable downtime to treat rooms (1.5-5 hrs.), time to disassemble the HVAC system, solution dispensing errors, and can only be used for terminal disinfection. [3]

Continuous Non-Toxic Room Decontamination

Because we are not effectively removing the contaminants on a daily basis from patient rooms and those contaminants in those rooms can be a mechanism of transfer of pathogens from the surfaces to patients and can, of course, increase risk of transmission of healthcare associated infections. We would like to have a continually active room decontamination system, so essentially, it continually inactivates organisms and it doesn't interfere with patient care. All people can enter. Staff can enter, patients can be there, and of course, visitors can enter.

- Dr. William A. Rutala `{`2`}`

Precursor to ActivePure – PCO Technology

Photocatalytic Oxidation (PCO) technology provides one of the most viable solutions to the problem of indoor air contamination by microorganisms and VOCs and as a defense against the threat of contamination of ventilation systems by bioterrorism. The photocatalytic process involves the action of low energy UV light on a catalyst in the presence of water vapor, which generates hydroxyl radicals that destroy microbes and airborne VOCs. [1] Photocatalytic technology is an emerging area that is proving to be effective at decontaminating air and reducing indoor air pollution in ventilation systems. It has been demonstrated successful at removing microorganisms, VOCs, bacteria, and spores, while providing protection against bioterrorism agents. This technology, when combined with a HEPA filter, becomes an effective answer to the indoor air quality problem and can be integrated into central air conditioning systems or used in stand-alone units. [6]

“What we’re looking for essentially, is a dilute Hydrogen Peroxide, a concentration of Hydrogen Peroxide that kills micro-organisms but is not harmful for patients, or of course, staff. How do you get a concentration of Hydrogen Peroxide that’s very low? There’s various technologies that take Oxygen out of the air, you take water out of the air, and you make Hydrogen Peroxide.”

- Dr. William A. Rutala `{`2`}`

ActivePure’s RCI Technology

ActivePure’s® purifying molecules (AP) technology is an enhanced, more intense version of PCO and HPV technologies. ActivePure incorporates Hydroxyl Radicals (OH), Vapor Hydrogen Peroxide (H2O2), a very low level of (soft) Ozone (O3), and UV-C light.  This greatly enhanced version of the PCO process also has the ability to reduce Ozone levels up to 50% while creating Hydroxyl Radicals and super oxide ions. The catalyst of Titanium Dioxide (TiO2) and other metals reduces EPIs, VOC gasses, and other HAIs by >99.9% on a continuous basis. Improving on PCO’s effectiveness, ActivePure reduces the H2Orate down to .05 ppm, and continuously treats the entire facility through the HVAC system, attacking surface and airborne contaminants on the spot as well as porous materials like curtains, cushions and clothes, thereby providing a consistently pure environment.

Titanium Dioxide (TiO2)

Titanium Dioxide (TiO2) used in Photocatalysis processes is non-toxic, chemically stable, available at a reasonable cost, and capable of repeated use without substantial loss of catalytic ability. The mechanism of bacterial action of TiO2 Photocatalysis, is attributed to the combination of cell membrane damage and further oxidative attack of internal cellular components, ultimately resulting in cell death. [7,8] TiO2 is non-toxic and has been approved by the American Food and Drug Administration for use in human food, drugs, cosmetics, and food contact materials. [7,9]


  • Continuous Micro-biocidal & Sporicidal Activity
  • Non-Toxic Proprietary System – Use in Occupied Spaces
  • Dramatically Reduces Contaminants at the Source
  • Substantial Reduction of Odors
  • Cost Effective – Great ROI
  • In-Duct Placement or Portable Units Available
  • Encourages LEED Certification Points
  • No Training or Dedicated Staff Needed
  • Products can handle small rooms or up to 80,000 cu. ft.
  • Degrades Toxic Chemical (Formaldehyde, etc.)
  • Made in America* – typically ships within days
  • No Chemicals or Carcinogens
  • No Down Time – Easy to Install
  • Safe for Sensitive Equipment
  • Very Low Maintenance
  • Energy Saving Solutions
  • Effective on Soft Surfaces, Fabrics and Porous Materials
  • No Need to Seal Room
  • Sanitizes Air Ducts
  • No Toxic By-Products or Residue

* The Pure & Clean is developed and designed in America.

View ActivePure Test Results


[1] Goswami, D. Yogi (2003) Decontamination of Ventilation Systems Using Photocatalytic Air Cleaning Technology, Journal of Solar Energy Engineering, Vol. 125(3), pp. 359-365. Retrieved from http://solarenergyengineering.asmedigitalcollection.asme.org/article.aspx?articleid=1456830


[2] Deverick J. Anderson, Luke F. Chen, David J. Weber, Rebekah W. Moehring, Sarah S. Lewis, Patricia F. Triplett, Michael Blocker, Paul Becherer, Conrad Schwab, Lauren P. Knelson, Yuliya Lokhnygina, William A. Rutala, Hajime Kanamori, Maria F. Gergen, Daniel J. Sexton, for the CDC Prevention Epicenters Program. (2017) Enhanced terminal room disinfection and acquisition and infection caused by multidrug-resistant organisms and Clostridium difficile (the Benefits of Enhanced Terminal Room Disinfection study): a cluster-randomized, multicenter, crossover study. The Lancet, Vol. 389, No. 10071, pp 805-814. Retrieved from http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(16)31588-4/fulltext


[3] Ortega MT, Franken LJ, Hatesohl PR, Marsden JL (2007) Efficacy of EcoQuest Radiant Catalytic Ionization Cell and Breeze AT Ozone Generators at Reducing Microbial Populations on Stainless Steel Surfaces. Department of Animal Sciences & Industry, K-State Food Science Institute, Kansas State University, Manhattan, KS 66506. Published Nov. 21, 2007. Retrieved from http://onlinelibrary.wiley.com/doi/10.1111/j.1745-4581.2007.00107.x/full


[4] S. Shinneman, Dallas Business Journal (2017) Dallas company’s tech earns spot in Space Foundation hall of fame, spurs growth to $250M in revenue. Published April 24, 2017. Retrieved from https://www.bizjournals.com/dallas/news/2017/04/24/dallas-company-s-tech-earns-spot-in-space.html

[5] Rutala, William A., PhD, MPH (2017) Disinfection and Sterilization: What’s New? APIC 2017 44th Annual Conference, Portland, Oregon, USA, June 14-16, 2017.


[6] Rozzi-Ochs, Jessica A. (2006) Shipboard Ventilation Systems and Design Standards on Board United States Coast Guard Cutters, Doctoral thesis, University of Florida, pp. 25-26. Retrieved from http://etd.fcla.edu/UF/UFE0014862/rozziochs_ j.pdf


[7] Joanne Gamage, Zisheng Zhang, Department of Chemical and Biological Engineering, University of Ottawa, 161 Louis Pasteur, Ottawa, ON, Canada K1N6N5 (2010) Applications of Photocatalytic Disinfection. International Journal of Photoenergy, Vol. 2010, Article ID 764870. Retrieved from https://www.hindawi.com/journals/ijp/2010/764870/#B1


[8] MA Fox, CC Chen, K Park, and JN Younathan (1985) Organic Transformations in Non-Homogeneous Media, MA Fox, Ed., ACS Symposium Series, p. 278, as cited in Gamage & Zhang’s Applications of Photocatalytic Disinfection (2010).


[9] K Sunada, T Watanbe and K Hashimoto (2003) Studies on photokilling of bacteria on TiO2 thin film, Journal of Photochemistry and Photobiology A, Vol. 156, No. 1-3, pp 227-233, as cited in Gamage & Zhang’s Applications of Photocatalytic Disinfection (2010).

The above paragraphs are a compilation of supporting references and are not an independent test of the efficacy of ActivePure or its products. The views expressed herein are those of The Krah Corp., LLC and do not constitute an endorsement by any of the individuals quoted or cited herein. Our products are not medical devices and are not intended to diagnose, treat or cure any disease.

What Our Partners Say

"Mercy EMS has been using Krah Health Solutions for almost a decade now. Our new and remounted ambulance specs were updated to include installation of the AP5 device. We made this decision following the testing by our Infection Control dept. of the patient compartment and the various equipment. It was obvious based on that testing that we could improve and the AP5 was a quick and achievable solution. We realized immediate improvement in our ambulances with the technology installed. The AP5 works quickly and is appreciated by our co-workers who feel better about the working environment in our ambulances. I would recommend Beth Krah and her team to an EMS agency considering improvement methods for their ambulances as it relates to infection control."

Bob Patterson, Executive Director
MERCY EMS - Springfield

"We were absolutely blown away by the effects of ActivePure. Very impressive, especially in the shower tent. We noticed a great improvement in only 30 minutes!"

Western Shelter Systems
Navy SEALs/Special Ops Training Exercise

"Beth is awesome, is always willing to work with and support her customers. We have been using ActivePure Technology in our ambulances since 2013, and are very impressed with the results."

Brad Mackey
Paramedic, Field Supervisor
Mercy EMS Camden County

"We're proud to have raised the standard for pro-active infection control in the ambulances we up fit and remount. We are putting AP5s in our in-stock remounted ambulances as a value-added feature that will positively affect the work environment for Paramedics and EMTs. We encourage all of our customers to take advantage of this system for the health of their employees and their patients."

Remount Project Manager
Emergency Vehicles Plus

"What a great job Beth has done for our organization. She was very professional and knowledgeable as we work to resolve our issue. I highly recommend Beth."

Ken O'Kelley, Vice President
YMCA Camping Services

"The biggest improvement I noticed was in my Containerized Housing Unit (CHU). These metal 10’ x 10’ boxes have no ventilation and the staleness and odors can be unbearable. I no longer have to place my electric fan in the doorway to blow in air from the outside, not an ideal situation considering the burn pits all over the city."

Lt. Col. Stephen Kirby, U.S. Army

"The Krah Corporation and the ActivePure Technology they supply have worked as promised. Having installed and tested in ambulances we found their product performed as they promised."

Fred Schimmel
American Emergency Vehicles

In The News

Learn More About the Science Behind ActivePureHere