Cinema Concerts Government Museums Cinema Concerts Government Museums

Now, and for the future

We need commercial UV disinfection technology that effectively reduces harmful pathogens, is safer for use in indoor spaces, and adds a layer of defense as part of a multi-disinfection strategy like regular cleaning.

Urbanization, worldwide population growth, and global travel contribute to diverse contact among people, livestock, and wildlife, increasing the frequency and transmission of new pathogens that may harm us. We need safe and effective disinfection technology that reduces pathogens now, and for the future.

Christie CounterAct with patented Care222 technology

Christie CounterAct commercial UV disinfection fixtures contain patented Care222® technology that emits filtered far-UVC 222nm light, designed to neutralize pathogens with people present while meeting established safety guidelines.

CounterAct fixtures:

  • As easy-to-use, install, and service as traditional lighting fixtures*
  • Feature instant on/off at full power
  • Programmable for automated operation
  • Remote controlled via an app
  • Available in AC and DC power
  • Available in black and white

And Care222 is the world’s first UVC technology with a proprietary optical filter that blocks potentially harmful UVC wavelengths from being emitted.

*Professional installation is recommended for Christie CounterAct products

Not all UVC light is created equal

We know ultraviolet (UV) light is highly effective in reducing pathogens—businesses have long used germicidal UVC light to disinfect spaces.

UVC light is a type of UV light that inactivates airborne and surface pathogens like viruses and bacteria by damaging their RNA and DNA.

Conventional germicidal lamps that emit UVC light with longer wavelengths (>230nm) effectively reduce pathogens but present a human health hazard to unprotected eyes and skin.

For safer, continual pathogen reduction

CounterAct products contain patented Care222 lamps that emit filtered far-UVC 222nm light, designed to continually and effectively inactivate pathogens with people present.

A sweet spot on the spectrum

What’s new is the discovery and application of far-UVC 222nm light, a sweet spot on the UV spectrum that’s safer for humans because its limited range of penetration means it can’t penetrate past the protective outer layers of our skin and eyes.

Take a deep-dive into this new technology

You’ll learn about UVC in the spectrum of ultraviolet light, the differences between traditional 254nm and 222nm light, how far-UVC light kills pathogens, the scientific studies around safety and efficacy that continue to advance our understanding, and what makes Care222 a world-first.

We thought of everything

*Professional installation is recommended for Christie CounterAct products

Where can it be used?

Add a layer of defense to your indoor space with Christie CounterAct, designed to neutralize pathogens with people present while meeting established safety guidelines

 
Theme parks

Theme parks

Cinemas

Cinema

Hospitality

Hospitality

Corporate

Corporate

Government

Government

Houses of worship

Houses of worship

Sports venues

Sports venues

Indoor spaces

Any indoor space


The pathogen-reducing efficacy of Christie CounterAct products with patented Care222 technology and their use in occupied spaces is dependent on proper installation and operational specifications, in accordance with American Conference of Governmental Institutional Hygienist (ACGIH) guidelines.

Can far-UVC 222nm light inactivate SARS-CoV-2 (COVID-19)?

A September 2020 study by researchers at Hiroshima University entitled Effectiveness of 222nm ultraviolet light on disinfecting SARS-CoV-2 surface contamination found that far-UVC 222nm light effectively reduced more than 99.7% of surface contamination of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), the virus that causes COVID-19.

The physics of far-UVC 222nm light: Studies, safety, and efficacy

The physics of far-UVC 222nm light: Studies, safety, and efficacy

Dr. David J. Brenner, Ph.D., D.Sc.
Theoretical physicist and Higgins Professor of Radiation Biophysics
College of Physicians & Surgeons
Columbia University

COVID-19 Virtual Symposium: April 8, 2020
(Video length – 11:23)

Top 3 reasons to choose Christie CounterAct

1

It’s designed for safer, continual disinfection

continual disinfection
2

It’s effective

Effective
3

It’s a world-first

World's first

In the news

News media can download CounterAct information here or contact pr@christiedigital.com

 

Christie CounterAct resources

Christie CounterAct data sheet

Christie CounterAct data sheet

Learn more about Christie CounterAct products with patented Care222 technology

Christie CounterAct white paper

Christie CounterAct white paper

Using far-UVC 222nm light to significantly reduce pathogens like SARS-CoV-2 (COVID-19) in indoor spaces

Extreme Exposure to Filtered Far-UVC: A Case Study

Extreme Exposure to Filtered Far-UVC: A Case Study

January, 2021
University of St. Andrews

The results of this study suggest that filtering longer (>230nm) ultraviolet wavelengths in far-UVC devices is critical for human skin safety and advances the argument for ACGIH exposure limit expansion, which would subsequently enable faster inactivation of viruses.

Exposure of Human Skin Models to KrCl Excimer Lamps: The Impact of Optical Filtering

Exposure of Human Skin Models to KrCl Excimer Lamps: The Impact of Optical Filtering

December, 2020
Columbia University Irving Medical Center

This study compares filtered and unfiltered krypton-chloride (KrCl) excimer lamps and found a notable increase in allowable exposure when using a filter and supports the use of filters for far-UVC KrCl excimer lamps when used to limit disease transmission in occupied locations.

Effectiveness of 222-nm ultraviolet light on disinfecting SARS-CoV-2 surface contamination

Effectiveness of 222-nm ultraviolet light on disinfecting SARS-CoV-2 surface contamination

September, 2020
Hiroshima University

This study found that far-UVC 222nm light effectively reduced more than 99.7% of surface contamination of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), the virus that causes COVID-19.

Exploratory clinical trial on the safety and bactericidal effect of 222-nm ultraviolet C irradiation in healthy humans

Exploratory clinical trial on the safety and bactericidal effect of 222-nm ultraviolet C irradiation in healthy humans

August, 2020
Kobe University

This study suggests that the filtered far-UVC light emitted by Care222 modules can be used to reduce pathogens while people are present. The study concludes that far-UVC (222nm) at 500 mJ/cm2 was a safe irradiation dose (despite being far stronger than current ACGIH threshold of 23 mJ/cm2 per 8-hour exposure) and possessed bactericidal effects, and that in the future, far-UVC (222nm) could be expected to contribute to the prevention of perioperative infection.

Far-UVC light (222nm) efficiently and safely inactivates airborne human coronaviruses

Far-UVC light (222nm) efficiently and safely inactivates airborne human coronaviruses

June, 2020
Columbia University Irving Medical Center

This study found that 99.9% of aerosolized seasonal coronaviruses (that cause the common cold) were inactivated when exposed to far-UVC 222nm light for 25 minutes.

Long-term Effects of 222-nm ultraviolet radiation C Sterilizing Lamps on Mice Susceptible to Ultraviolet Radiation

Long-term Effects of 222-nm ultraviolet radiation C Sterilizing Lamps on Mice Susceptible to Ultraviolet Radiation

May, 2020
Kobe University

This study investigated the long-term effects of far-UVC 222nm light on skin using highly photocarcinogenic phenotype mice. The results suggest that far-UVC 222nm lamps can be used as an alternative to 254nm, since 222nm exerts a comparable disinfection ability and can be safely used for disinfecting human skin.

Germicidal Efficacy and Mammalian Skin Safety of 222-nm UV Light

Germicidal Efficacy and Mammalian Skin Safety of 222-nm UV Light

February, 2017
Columbia University Irving Medical Center

This study suggests far-UVC 222nm light is as effective at killing (antibiotic-resistant) bacteria as conventional germicidal UV lamps that use 254nm light, but without associated skin damage risks.

Ushio Care222® Filtered Far UV-C Excimer

Video length - (06:08)

Using the Power of Light: Preventing the Airborne Spread of Coronavirus

Video length - (01:36)

A new weapon in the fight against superbugs | David Brenner - TedTalk

Video length - (10:13)

Can light stop the coronavirus? – David Brenner (TED Talk Daily Podcast)

Video length - (30:15)

Care222® Mercury-Free Far UV-C Excimer

Video length - (02:09)

play
Coronavirus: New Facts about Infection Mechanisms

Coronavirus: New Facts about Infection Mechanisms

Video length - (06:16)

Configure your space with the CounterAct calculator

 

All references to “disinfect”, “disinfecting” and “disinfection” refer generally to the reduction of pathogenic bioburden and are not intended to refer to any specific definition as may be used by any governmental or regulatory authority including the U.S. Food and Drug Administration and the U.S. Environmental Protection Agency. Christie CounterAct products with patented Care222 technology are not medical devices and are not to be used as or for medical devices. The pathogen-reducing efficacy of Christie CounterAct products and their use in occupied spaces is dependent on many site-specific factors as well as proper installation and operation within specifications and in accordance with American Conference of Governmental Institutional Hygienist (ACGIH) guidelines. Professional installation is recommended for Christie CounterAct products. The Care222® standard character mark and stylized logo mark are registered trademarks of Ushio America, Inc. in the United States, Japan, European Union, and United Kingdom.