Air Duster 1.100% ozone safe 2.Pure compressed gas 3.Non-flammable 4.Zero residue Air DusterInstruction: it can blow-off dust ... gas,100% ozone safe, non-flammable, zero residue; sprayer can control extruderoutput, multi-angle spray, strong cleaning function, with ... , delicate lab equipment, photo equipment, control system. All air dusters should be used in short, sharp blasts.CodeSpec.PackageHC ...