1. EN 50050:1986. Electrical apparatus for potentially explosive atmospheres. Electrostatic hand-held spraying equipment.
2. EN 50053-1:1987, EN 50053-2:1989, EN 50053-3:1989. Requirements for the selection, installation and use of electrostatic spraying equipment for flammable materials. Part 1: Hand-held electrostatic paint spray guns with an energy limit of 0.24 mJ and their associated apparatus. Part 2: Hand-held electrostatic powder spray guns with an energy limit of 5 mJ and their associated apparatus. Part 3: Hand-held electrostatic flock spray guns with an energy limit of 0.24 mJ or 5 mJ and their associated apparatus.
3. U. von Pidoll, H. Krämer. Minimum ignition energies of powders for the electrostatic coating process. This conference.
4. EN 50014:1992. Electrical apparatus for potentially explosive atmospheres - General requirements.
5. EN 50020:1976. Electrical apparatus for potentially explosive atmospheres - Intrinsic safety “i”.