Mycobacterium tuberculosis has enjoyed the distinction, among the nonspore bearing organisms, of being one of the most resistant to chemical disinfection. Quaternary ammonium compounds, widely used as effective germicides against gram positive organisms, have generally proved to be without effect on the tubercle bacillus (Lawrence and Grover, 1951; Smith et al., 1950). Recently, it has been rep...

The solar UV radiation coming from the sun is considered as main source of microbial germicide and environmental sterilization. objective this study to estimate dose amount time required inactivate coronaviruses by exposure. published trials on 254-nm inactivation under ultraviolet light exposure families equivalent microbe in terms D90 (ultraviolet for 90% inactivation), or any other or/and ge...

Due to the COVID19 pandemic, solutions automate disinfection using UV-C combined with mobile robots are beginning be explored. It has been proved that use of these systems highly reduces risk contagion. However, its in real applications is not being as rapid it needs be. One main market input barriers fear degrading facilities. For this reason, crucial perform a detailed study on degradation ef...

Glycerin has been employed for a number of years for the conservation of vaccine virus t and other materials of similar nature, e. g., the virus of rabies, clavele, rinderpest, and foot and mouth disease. Its preservative properties for animal and vegetable tissues are also well recognized. It has, however, been employed more as a diluent, particularly in the case of bovine virus, than because ...

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