Beseler"s Dust Gun 100 is a "top of the line" duster. DustGun 100 now offers a propellant more enviromentally safe than ever before. DustGun 100 is: 100% OZONE SAFE NON-FLAMMABLE and CONTAINS NO ETHERDustGun 100 provides the dry, ultra-filtered air to remove even microscopic dust and lint from your negatives, slides and photo or electronic equipment.Super DustGun 100 is similar to the standard disposable DustGun 100 in every way except that it is many times more powerful than any standard aerosol. Use where strong, concentrated cleaning power is needed. Valve adjustable for light to strong dusting.Beseler Duster is an ecomically priced, general pur-pose, ozone safe duster. Duster is non-flammable. It is a pure, ether free, non-blended, ultra filtered dusting product. Duster comes in two sizes with adjustable Accusol valves.