Disinfectants liquid, evaluation

For experimental evaluation of potential air disinfectants, bacterial or fungal airborne suspensions can be created in a closed chamber, and then exposed to the disinfectant, which may be in the form of radiation, chemical vapour or aerosol. The airborne microbial population is then sampled at regular intervals using an appropriate forced-air apparatus such as the slit sampler. With viruses, the air can be bubbled through a suitable liquid medium, which is then subjected to some appropriate virological assay system. In all cases, problems arise in producing a suitable airborne microbial suspension and in neutralizing residual disinfectant, which may remain in the air. 

Gaustad, J.W., McDuff, C.R., and Hatcher, H.J., 1974. Test method for the evaluation of virucidal efficacy of three common liquid surface disinfectants on a simulated environmental surface. Appl. Microbiol., 28 748-752. 

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