10.22376/ijpbs.2019.10.1.p1-12 Volume 3 Issue 2 2012 (April - June) The antibacterial activities of Hexane, Petroleum ether, Acetone, Methanol, and Aqueous solution extracts from the plant " lessThan i greaterThan Impatiens balsamina" lessThan /i greaterThan was screened against selective bacterial human pathogens namely lessThan i greaterThan Shigella boydii, Salmonella paratyphii, Proteus vulgaris, Staphylococcus aureus, Candida albicans lessThan /i greaterThan and lessThan i greaterThan Cryptococcus neoformans lessThan /i greaterThan by disc diffusion method. The bacterial pathogens lessThan i greaterThan Shigella boydii, Candida albicans lessThan /i greaterThan , and lessThan i greaterThan Cryptrococcus neoformans lessThan /i greaterThan showed good positive results (Susceptibility) to the plant extract of " lessThan i greaterThan Impatiens balsamina lessThan /i greaterThan " that the zone of inhibition of bacterial pathogens were high in the scale of millimeter ranging from 16 mm to 38 mm. The pathogens lessThan i greaterThan Proteus vulgaris lessThan /i greaterThan and lessThan i greaterThan Staphylococcus aureus lessThan /i greaterThan shows moderate positive results (Susceptibility) to the plant extracts of " lessThan i greaterThan Impatiens balsamina" lessThan /i greaterThan that the zone of inhibition of bacterial pathogens ranging from 1mm to 29 mm. From this above findings, we come to the conclusion that the plant " lessThan i greaterThan Impatiens balsamina" lessThan /i greaterThan possesses certain phytochemical properties and these properties in the form of chemicals were responsible for the zone of inhibition formation on the bacterial growth. Therefore, it can be highly recommended for research in the process of drug development for several diseases S. Ahmed John And M. Koperuncholan Impatiens balsamina, Antimicrobial Activity, human Pathogens, Disc Diffusion Method 401-406