Introducing Grignard Pure

(pronounced “Grin-yard”)



Breaking News

January 15, 2021: The EPA announces today that it has authorized a Section 18 Emergency Exemption for Grignard Pure to allow the sale and use of the Grignard Pure technology solution, initially in Georgia and Tennessee.

EPA Press Release:

EPA Approves Emergency Exemption for Antiviral Air Treatment

Grignard Pure Press Release:
EPA Awards Section 18 Public Health Emergency Exemption to Grignard Pure™ For First Antimicrobial Air Treatment Solution Proven Effective Against COVID-19


Media Inquiries:

Katie Seifert for Grignard Pure


If you have questions about Grignard Pure or are interested in learning more about how to partner with Grignard Pure as a distributor, installer or engineer, please call us at:

1 (855) 642-PURE (7873)

Grignard Pure is a first-of-its-kind antimicrobial air treatment technology that kills more than 98% of the SARS-CoV-2 virus in the air, in occupied spaces — where transmission is most likely. The product is continuously effective when in use

Grignard Pure is currently seeking approval from the  EPA (Environmental Protection Agency) for an Emergency Exemption that will allow for the use of the technology solution in certain states and in specific indoor locations to be determined by the EPA  as part of its evaluation and research.

Grignard Pure reduces the levels of airborne virus particles by ~100X – making it an added, critical component in a safety protocol that includes personal hygiene, wearing a protective mask and practicing social distancing.

Grignard Pure is grounded in a legacy of chemistry innovation and a vision built on science credibility. Grignard ancestor Victor Grignard won the Nobel Prize in Chemistry for “the Grignard reagent.” Grignard Pure’s Advisory Team includes public health, environmental science and engineering, microbiology, and pharmacology doctors from institutions including Harvard, Oxford, Rutgers, Johns Hopkins and NYU.

Frequently Asked Questions

Grignard Pure is an innovative technology – known as an antimicrobial air treatment” – that will combat the spread of the SARS-CoV-2 virus that causes the COVID-19 disease. It works  reducing the number of viral particles in indoor locations – in the air, where transmission is most likely

Grignard Pure’s efficacy (effectiveness) and health & safety have been rigorously tested by leading, global testing facilities..

First, hundreds of millions of people around the world have been exposed to a product with properties identical to Grignard Pure over the past 20 years without a single health concern ever reported. In addition to those referenced above, these exposures range from the Louvre Museum in Paris to conventions to banquets, where food is served.

More important, the ingredients in Grignard Pure have been subjected to rigorous testing and shown to be safe.

Studies conducted by the U.S. Centers for Disease Control’s National Institute of Occupational Safety and Health (NIOSH) and assessment by the EPA indicate that the active ingredient in Grignard Pure is safe with no endpoints.

Intrinsik (Intertek) conducted a Toxicity Review Assessment (TRA) in May, 2020 which confirmed the product is safe for use, when used as directed and exposed to a population for extended periods of time.

Over-the-counter disinfectants like Lysol and Clorox do perform what is called “hard surface, non-porous” disinfection – and are one important component of a safety strategy. These products are actually on the EPA ‘List N’ list of products approved for “episodic intervention.” Unfortunately, there are several limitations to their overall effectiveness:

In order to inactivate the virus on a hard, non-porous surface, a disinfectant must remain wet on the surface for a specified “dwell time” before wiping it off.   Over two-thirds of List N products require at least five minutes “dwell time,” and for many products, including Lysol and Clorox, using as directed typically requires that the product remain wet on a surface for 10 minutes or longer before wiping.

This makes it nearly impossible to properly disinfect vertical or hard-to-reach surfaces.

Grignard Pure is the only available airborne “virus inactivator” that can inactivate, or “destroy,” the SARS-CoV-2 virus in a use pattern (in the air) and in locations that these disinfectants are not effective.

Grignard Pure creates what is called “continuous intervention,” which simply means that the air treatment technology is continuously working to inactivate the virus where it is most dangerous – in the air.

The following are links to additional resources:

1. How COVID-19 Spreads

The Centers for Disease Control; May 22, 2020

2. Turbulent Gas Clouds and Respiratory Pathogen Emissions: Potential Implications for Reducing Transmission of COVID-19

From JAMA, The Journal of the American Medical Association (Lydia Bourouiba, PhD) March 23, 2020

3. Temporal dynamics in viral shedding and transmissibility of COVID-19

From Nature Medicine (multiple authors) April 15, 2020

4. The airborne lifetime of small speech droplets and their potential importance in SARS-CoV-2 transmission

Proceedings of the National Academy of Sciences of The United States of America (Valentyn Stadnytskyi, Christina E. Bax,  Adriaan Bax, Philip Anfinrud); June 2, 2020

The United States Environmental Protection Agency’s List N ( is a list of disinfectants approved for use

against SARS-CoV-2 (COVID-19. )

While “surface disinfectant” products on List N have not been tested specifically against SARS-CoV-2, the cause of COVID-19, EPA expects them to kill the virus because they:

  • Demonstrate efficacy (e.g. effectiveness) against a harder-to-kill virus; or

  • Demonstrate efficacy against another type of human coronavirus similar to SARS-CoV-2.

However, these surface disinfectant products (which include common household brand names like Lysol and Clorox) only work to kill viruses on hard, non-porous surfaces such as counters and doorknobs. In addition, using these products as directed requires that they remain wet on a surface for ten minutes before being wiped off..

The EPA currently does not have a definition for an aerial disinfectant, or airborne virus inactivator, like Grignard Pure. This is the process we recommend in order to meet all government requirements and benefit from the efficacy and safety of Girgnard Pure’s viricidal properties:

1. Contact Grignard

2. We will submit the application to your State
3. We will also provide a letter for your company to send to the appropriate  State Agency
4. The State Agency will then forward the application to the EPA for an emergency exemption
5. The EPA then approves the product for use in your State
Grignard is submitting the required documents for EPA certification for the new use as an airborne disinfectant / virus inactivator but the government process may take up to 5 years.

The use of Grignard Pure as an effective tool to combat the spread of COVID-19 is new. Products with similar properties to and the same active ingredient as Grignard Pure have been used safely all around us for over 20 years. If you have been to a Broadway play, a live music performance, or a stage show at a theme or amusement park, you’ve probably “seen” the product in use.

Grignard Pure creates a non-hazardous, light air treatment throughout an indoor space.  At entertainment venues like those listed above, event producers use the product to create lighting and other effects that add to the overall experience.

The safety of air treatment products like Grignard Pure is proven by their long history of use without any reported health concerns.  NIOSH concluded that air treatment product like this did not affect people with asthma.  The EPA has said that the active ingredient in Grignard Pure does not cause harm when inhaled.

Locations where Grignard Pure is in use if approved by the EPA will have numerous and prominent signs posted, to advise people who might have questions about their own health and to give them the clear option not to enter the facility should they not feel comfortable.

There are several key reasons why Grignard Pure can be an important component of an overall set of protocols to ensure people can congregate more safely in indoor environments:

  • If approved by the EPA, Grignard Pure would be the only antimicrobial air treatment capable of killing the SARS-CoV-2 virus, in contrast with the disinfectants identified on EPA’s “List N – Disinfectants for Use Against SARS-CoV-2” that are approved only for use on hard surfaces.
  • The U.S. Centers for Disease Control (CDC) May 22, 2020 press release, that explains how COVID-19 spreads, confirms the need for Grignard Pure. The SARS-CoV-2 virus spreads easily and sustainably from person to person. The primary route of transmission is through contact with respiratory droplets produced when a nearby infected person coughs, sneezes, or just talks. It may be possible for COVID-19 to spread from touching the mouth, eyes and nose after touching surfaces or objects that have the virus on it; however, CDC does not think this is the main way the virus spreads.
  • Grignard Pure works as the pathogenic particles leave the person from talking, coughing, or sneezing, reducing the risk of infections. This is a major advantage because disinfecting a hard surface makes it safe only until an infected person coughs or sneezes on it.

Grignard Pure, when used as directed, will promote the opening of the economy, including entertainment venues, retail establishments, commercial buildings, restaurants, and mass transit. In addition, further testing may indicate that Grignard Pure could help enable the relaxation of social distancing guidelines

Grignard Pure is an air treatment solution closely related to Grignard Company’s family of theatrical lighting effects products. These products have been in use all around us for more than twenty years in stage shows, sporting events, musical concerts, houses of worship, corporate trade shows and conventions, awards shows and numerous other events and activities. Over that time, millions of people around the world have been exposed for extended periods of time without one reported instance of eye or skin irritation or health concern from inhalation.

This gets a little technical, but it is important to know: Grignard Pure forms small droplets that float in the air. The active ingredient in the Grignard Pure vapor and nanoparticles actually condense on virus particles, reaching a lethal germicidal level. The active ingredient in the droplets then permeate into the virus, disrupting the protein and membrane structure of the virus with its amphiphilic properties.

What this simply means is that Grignard Pure kills the virus, as the pathogenic particles leave the person from talking, coughing, sneezing – significantly reducing what is the primary cause of infection.

Testing undertaken by Microchem, a leading, globally-recognized lab for airborne virus testing, confirmed that Grignard Pure kills more than 98% of the airborne virus particles. 

The reduction of viruses is directly related to viral load. Since the viral load will be decreased, the risk of infection is correspondingly reduced.

Under the terms of initial Emergency Exemption being sought, Grignard Pure is only for use in the following listed indoor spaces (occupied or unoccupied) when adherence to current public health guidelines (e.g., CDC guidance at recommending social distancing, limited occupancy, and increased ventilation) is impractical, difficult to maintain, or is not expected to provide a sufficient level of protection. Areas of particular concern include breakrooms, locker rooms, bathrooms, lobbies, elevators, eating areas, and food preparation areas within:

  • Health care facilities (e.g., hospitals, nursing homes, medical offices, dental offices), but not in resident / in-patient rooms, emergency rooms, operating rooms, or intensive care units;
  • Intrastate buses, trains, and subways;
  • Food processing (NAICS 311) but not food services (NAICS 722);
  • Indoor spaces within buildings, including government facilities, where people are conducting activity deemed essential by the state as specified on state websites available at

Locations using Grignard Pure will prominently display the “Treated with Grignard Pure” seal, seen here, at major entrances.

There are numerous technologies and products making claims about effectiveness in mitigating the spread of COVID-19. We have done extensive research into these solutions and have analyzed modes of operation, product claims and product drawbacks. You can access our Competitive Analysis Highlights chart here and download the compete report here, which also includes our analysis of the effectiveness of behavior protocols including social distancing and the wearing of masks.

Have questions or comments?