Air Duster 1.100% ozone safe 2.Pure compressed gas 3.Non-flammable 4.Zero residue Air DusterInstruction: it can blow- ... surface. Application:Printers, switch and solenoid, medical equipment, PLC, keyboard, computer, fax machine, printing machine, projector, microscope, camera, ... delicate lab equipment, photo equipment, control system. All air dusters should be used in short, sharp blasts.CodeSpec. ...