What is UV-C?

Through the last 40 years UV-C light has been used for disinfecting water, air, pharmaceutical products and different surfaces. 

The sun radiates UV-light in three different wavelengths: UV-A, UV-B and UV-C. While UV-A and UV-B can reach the earth, UV-C is absorbed in the ozon layer. UV-C has a very short wavelength. The short wavelength and the fact that UV-C is able to penetrate cell walls makes UV-C useful for disinfection. 

UV-C for disinfection

Viruses and bacteria use DNA and RNA when they multiply and spread. When viruses and bacteria is exposed to UV-C-light the function of their DNA and RNA is disturbed and their ability to infect a host cell is ruined. This makes viruses and bacteria unable to spread and they are considered deactivated.  

UV-C is an effective tool for deactivating viruses and bacteria, but not a substitute for proper cleaning. puriZAP® does not remove dust and dirt. It should therefore be seen as a complementary tool to the daily cleaning practice.

puriZAP® effect on SARS CoV-2

Testing of puriZAP® at the University of Southern Denmark (SDU) with live Covid-19 virus, documents that exposure to puriZAP® for 1-5 seconds (distance 12-100 mm) deactivates 99.03-99.94% of SARS-CoV 2 viruses. After 10 seconds of illumination at a distance of 100 millimeters, no viable virus particles could be detected (> 99.97% reduction).


Additional studies conducted by Bianco et al. from 2020, from 2020, on the effect of UV-C light on coronavirus.