This non-invertible spray duster must be used upright, with a standard power setting will effectively remove dust and dirt from many surfaces. Easily tackles hard to reach areas of many technical equipment types. Fully compliant with changing F-gas regulations as of 1/1/18. Keypoints: Non flammable To be used upright only Easy to use. Suitable For: Keyboards, Printers, Fax machines, Photocopiers, Cameras, Delicate Electronic Equipment,