Air Testing & Disinfection Efficacy

With the goal of having a practical and scientific approach to support the marketing claims of the numerous decontamination technologies released into the market in the last years, we developed a series of in-house test methods to test the efficacy and safety of commercially available decontamination technologies.
Interior layout of Test Labs UKAS accredited testing laboratory

We perform all of our technology efficacy tests in one of our three state of the art test chambers of sizes 12m3 and 67.5m3. Each chamber is fully sealed and equipped with temperature and humidity sensors to monitor the environmental parameters throughout the duration of the test.

UV-C Technology

UV-C lightbulbs

UV-C has shown high efficacy for microbial inactivation and, as a result, this technology is widely used to decontaminate surfaces, air, and water.

Our test offering for this technology includes:

  • BS 8628: Disinfection using ultraviolet radiation – Methods for quantitative testing of automated ultraviolet disinfection activities by direct illumination
  • BS EN ISO 15858-2016: UV-C Devices – Safety information – Permissible human exposure
  • BS EN 14255-1:2005: Measurement and assessment of personal exposures to incoherent optical radiation – Part 1: Ultraviolet radiation emitted by artificial sources in the workplace.
  • BS EN ISO 15727: UV-C Devices – Measurement of the output of a UV-C lamp
  • UV-C Attenuation Test: Detection of potential UV-C light penetrating through translucent materials.

Air Filtration

The purpose of Air Filtration Units is to improve air quality by removing pollutants and harmful microorganisms. Unfortunately, most standards do not consider real-life conditions when testing the efficacy of these technologies. To provide more reliable data, we developed in-house methods for testing the efficacy of air filtration units by measuring:

  • Airborne Contamination: This test consists of measuring the viable particles in the air (particles that consist of, or support, one or more live microorganisms). Our method is based on EN 17141:2020 and BS EN ISO 14698
  • Particle Counts: Determination of number of ultrafine particles present in the air. Our method is based on ISO 14644-1:2015 and ISO 21501-4:2018.
  • Volatile Organic Compounds (VOC): Determination of the amount of the VOC’s released by the air filtration unit and the hazards associated with it.
  • Air Circulation: Measurement of the air delivery rate during the use of the unit to determine the efficiency in providing adequate air circulation within the environment.
Air purifier used in disinfection technology efficacy testing

Biocides

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We test a wide range of technologies including disinfection robots, fogging machines, electrostatic hand sprayers, and those that involve the use of chemical disinfectants in dispersed gas, vapour and/or aerosols, following our UKAS accredited test EN 17272:2020. In addition to this, we have specific tests for some of the most common biocide technologies, including:

  • VHP (Vaporised Hydrogen Peroxide) Technology: This technology consists of turning Hydrogen Peroxide into a gas to decontaminate environments and/or objects. We have in-house procedures to test the efficacy of VHP using Biological Spores, and the Off-Gassing time using gas meters calibrated to the long-term workplace exposure limit (1 ppm).
  • Ozone: We have in-house procedures to test the efficacy of exposing items to Ozone gas, and also to accurately measure the Ozone exposure levels in ppm.
  • We also have in-house method for testing some of the most recognized biocides in the industry, including: Peracetic acid and Hypochlorous acid.
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