TopFilm from Biosorb Inc. is a spray binder adjuvant that is a blend of biocarriers made from natural cereal grains. It retains applied ingredients, including insecticides, fungicides and herbicides, on the surface of plants. It dries in 10-30 minutes and forms a porous protective film on the leaf surface that allows transpiration to occur. This biodegradable product absorbs and spreads the treatment, increases contact time on the plant and reduces wash-off and evaporation.