Proof of effectiveness

The University Medical Center Groningen validates the effectiveness of Li.LAC

We wanted to know exactly how well the UV-C irradiation inside Li.LAC would inactivate viruses on the complex surface of a real microphone, including the metal grille and the foam underneath.

After five months of testing and hard work, we have some exciting results.

June 4th, 2021
Groningen, The Netherlands


LAC Labs has developed Li.LAC, a disinfection device for microphones, tailored for the music, live events, and entertainment industry. Microphones provide a potential risk in spreading viruses, including the SARS-CoV-2 virus that causes Covid-19. Together with the Departments of Biomedical Engineering and Medical Microbiology & Infection Prevention at the University Medical Center Groningen1 in the Netherlands, the disinfection effectiveness of Li.LAC was evaluated.

Since the start of the COVID-19 pandemic, disinfection has become increasingly important, and many practical approaches are being investigated to tackle this demand. UV-C allows highly efficient disinfection of potentially SARS-CoV-2 contaminated surfaces.2 The Li.LAC device, utilizing UV-C, has been designed specifically for fast and effective disinfection. The team from UMCG now showed that Li.LAC is able to strongly reduce viral activity in solution by >99.99% and that, even on a strongly contaminated microphone3, a 99.3% reduction of the viral load can be achieved within 10 minutes irradiation.4 Disinfection with Li.LAC thus allows users and performers to share their equipment with much reduced risk of acquiring and transmitting infections.

The ease of use along with the possibility of sterilizing a device as complex as a microphone is great and offers a lot of benefits for live entertainment” says Dr. Patrick van Rijn from the Department of Biomedical Engineering. This opinion is shared by fellow researchers and members of the team, Prof. dr. Jan Maarten van Dijl and Prof. dr. Anke Huckriede from Medical Microbiology & Infection Prevention at the University Medical Center Groningen. Also, researcher Valentina Vignali, performing the larger part of the research, indicates that “enabling safer performances and events will positively impact people to cope with the pandemic and allow for the relaunch of live events worldwide”.


1 The Departments of Biomedical Engineering, and Medical Microbiology & Infection Prevention are equipped to perform fundamental and application-oriented research.
3 Industry standard vocal microphones were used for this study.
4 Research data are available upon request, effectiveness assessment was performed using a model virus.

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