In medication Active ingredients combine with the components after this process, finally find individual doses(capsules and caplets etc) by fine chemical(here fine chemical is drug which is use in very little quantity to make medicines).In biocide-pesticides, chlorine and herbicides are used such as biocide or fine chemical. Pesticides and herbicides are used in home to kill living organism and chlorine are used to kill bacteria, algae in swimming pool at home and many industrial sight and also use in water treatment plant.