SPG Mobil. Disinfectant is a chemical used to reduce the number of viable microorganisms on the surface of the pharmacy to an acceptable level. Disinfectants have various properties which cover the spectrum of activities, ways of working, and effectiveness. Some bacteriostatic, where the ability of bacterial populations to reproduce discontinued. In this case, the disinfectant can cause selective and reversible changes in the microbial cells by interacting with nucleic acids and inhibit the enzyme, or penetrate into the cell wall. After the disinfectant is released from contact with bacterial cells, the surviving bacterial population can potentially grow there.