Third-Party Test Results 🧪

We at AirGuard believe in scientific disclosure and we are happy to make our testing data public. AirGuard’s efficacy claims have been verified by an internationally acclaimed leader in laboratory testing and certification, and also by a number of prominent Hong Kong, Chinese and US research institutions.

Inactivation of pathogens by disinfection using a logarithmic scale is referred to as 'logarithmic reduction' or 'log reduction'. This is the standard used by the US EPA for quantifying disinfection properties.

The US EPA's guidelines on disinfection state that a greater than or equal to 6-fold logarithmic (≥6-log) reduction in less than 10 minutes is needed to claim disinfection (EPA Product Performance Test Guidelines, 2012). Put simply, log inactivation is the order of magnitude by which the inactivation of unwanted organisms occurs, and the number relates to the percentage of organisms inactivated. A 6-log inactivation therefore corresponds to a 99.9999% reduction.

AirGuard’s technology has consistently demonstrated extremely high potency in eliminating all forms of pathogens, thus meeting or exceeding the EPA standard described above with regard to both contact time and log reduction values.

The testing methods used were either globally recognised protocols developed by ASTM International or European Standards (EN), or the generally accepted industry best practice as adopted by leading research instructions.

For more information on our testing or access to our full range of testing reports, please send us an email at

ASTM E2315 - 16

The results demonstrated that AirGuard’s solution was able to achieve a 6-log reduction in concentrations of various bacteria (both gram positive and gram negative, aerobic and anaerobic) and a fungus, following a 2 or 3 minute contact time, respectively.

EN 1276 2019

The test showed that AirGuard’s solution achieved more than a 6-log reduction in concentrations of various bacteria (both gram positive and gram negative, as well as aerobic and anaerobic) following 2 minutes of exposure. This level of success was sustained even after a 6-fold dilution of the liquid.

Inactivation of Coronavirus

Assessment of anti-covid activity of AirGuard Sanitizing Liquid was performed at a leading US research facility. Testing shows that AirGuard prevents COVID-19 from entering a host cell, thus preventing infection.

Toxicology screening

Together with verifying the effectiveness claims, an equally important task for any disinfection protocol is to demonstrate that it has no serious impact on the health and safety of consumers. In the following tests, AirGuard’s products showed no toxic effects during both short- and longer-term exposure.

The testing was performed by an independent laboratory and focused on the detection of heavy metals and various elements and chemical compounds considered toxic and/or cancerogenic by FDA and EU – REACH Annex XVII for consumer products. It is worth noting that some of the above compounds (commonly referred to as “heavy metals”) are naturally present in the earth and therefore traces of them can be found in organic products.

AirGuard’s liquid was shown to have only tiny traces of some of the substances (well under any thresholds set out by EU and US regulators) and thus attesting to it’s safety and the quality of the ingredients used in the production.

Acute toxicity

The liquid orally administered at a dose of 5000 mg/kg and inhaled at a dose of 1000 mg/kg of body weight did not induce any death or toxic symptoms in treated animals (10 male and 10 female mice). All animals displayed normal behaviour throughout the study and survived until the end of the 14-day experiment period. During the entire observation period, they did not present any significant clinical alteration.

A single application of the test solution to the non-irrigated eyes of three albino rabbits produced minimal conjunctival irritation. Three treated eyes appeared irritated at 1, 24 and 48 hour observation, and normal at 72 hour observation. No swelling, ulceration or opacity of the cornea was observed throughout. The sample was therefore determined to be non-toxic.

Haematological analysis showed that the liquid did not cause significant changes of any of the parameters tested. As a result, the LD50 was established to be greater than 5000 mg/kg of body weight.

Sub-chronic inhalation toxicity

The study was commissioned by the Hong Kong University of Science and Technology. The animals were exposed to the aerosol for 4 h/day, 5 days/week, for 14 consecutive weeks. In addition to mortality and clinical observations, body weight, food consumption, and behavioural observations were recorded. At the end of the study, the rats were subjected to a full necropsy, blood samples were collected for haematology and clinical chemistry tests, and the organ weights were measured. No observable adverse effect at the level of 19835 mg/m3 is suggested from the experiments, which is 5 times the average concentration of the solution recommended by Airguard.

The sub-chronic inhalation toxicity test is used to characterize the toxicity of a substance by the inhalation route for a sub-acute duration (around 90 days), and to provide robust data for quantitative inhalation risk assessments, including assessment of human residential risk and assessment of regulatory concentrations for occupational hazard settings.

Disclaimer: No means of disinfection can be fully guaranteed to prevent transmission of a pathogen. AirGuard recommends use of PPE and following the direction of the relevant government authorities. Our full disclaimer and terms of use can be found here.