1. Nature’s Detergent

In the early 1970's, Leeds University, in Great Britain, embarked on a program that asked the question, "What do hydroxyl radicals do?" A University study found that, the activity of atmospheric hydroxyls was responsible for neutralizing some 2500 atmospheric chemicals by way of some 7000 reactions. For this reason, hydroxyl radicals found in the atmosphere have been called "nature's detergent”

2. OH radical is harmless

Hydroxyl radicals also attack the porous cell walls of bacteria and viruses which destroys them through the process known as cell lysing. Human, animal and plant cells are "Designed" to be in the sunlight and have cell walls that are less porous and are not harmed by atmospheric hydroxyl radicals.
- Source : Primer on Hydroxyl Radicals (www.alidade-mer.com)

3.Proof of Safety

OH Radical has proven its stability through a number of domestic and international organizations such as the Ministry of Food and Drug Administration.

Official letter of the NIEHS, USA : OH Radical is No harmful to human health.

Definition of OH radical by Korean Food and Drug Administration :
It is a heterogeneous oxygen-anionic material that is generated by applying energy to the hydroxyl group (OH). It has excellent oxidizing power and is harmless to the human body.

Gas-phase radical chemistry in the troposphere

Paul S. Monks
Received 22nd November 2004
First published as an Advance Article on the web 28th February 2005
DOI : 10.1039/b307982c

Atmospheric free radicals are low concentration, relatively fast reacting species whose influence is felt throughout the atmosphere. Reactive radicals have a key role in maintaining a balanced atmospheric composition through their central function in controlling the oxidative capacity of the atmosphere. In this tutorial review, the chemistry of three main groups of atmospheric radicals HOX, NOX and XOX ( X=C2, Br, I ) are examined in terms of their sources, interconversions and sinks. Key examples of the chemistry are given for each group of radicals in their atmospheric context.

Study Finds a Decline in Natural Air Cleanser

By ANDREW C. REVKIN
Published: May 4,2001

Scientist say they have detected wide swings and, most recently, a sharp drop in atmospheric concentrations of chemicals that naturally purge the air of many kinds of contaminants and methane, a powerful heat-trapping greenhouse gas.
The scientists say they suspect that the decline is related to human activity, because the biggest drop was measured in the northern hemisphere, where most industry and other human activity is concentrated.
The researchers, who described their work in today's issue of the journal Science, said there were still many uncertainties involved in calculating amounts of the molecules.

Coxsackie Virus Test (July 2018) which Causes Hand-foot-mouth Disease (HFMD) :

(July 2018 Laboratory in UNIVERSITAT BARCELONA TECH) Result 99.99% Reductions

Human Respiratory Syncytial Virus (RSV) Test :

(December 2019 Laboratory in UNIVERSITAT BARCELONA TECH) Result 99% Reductions

ROTA Virus Test :

(December 2019 Laboratory in UNIVERSITAT BARCELONA TECH) Result 99% Reductions

1. COVID-19(SARS-CoV-2) test : 91.75% reduction (April, 2021, MRI Global, U.S.A)

* Experiment condition: Contaminated Surface – Stainless Steel in 0.37m³ Chamber for 2 Hours

2. Virus Test : More than 99% of reduction (Nov, 2018 & Dec, 2019, University of Barcelona, Spain )

* Experiment condition: 0.064m³ Chamber for 2 Hours

3. Bacteria Test : 99.99% Reduction (March, 2020, UPC, Spain)

* Experiment condition: 1m³ Chamber for 2 Hours

4. Bacteria Test : 99.9% Reduction (March, 2016, KCL, Korea)

* Experiment condition: 4 Hours in Chamber