The NEX S arm fullfils all requirements for use in environments containing explosive dust and gas, and with extremely high hygienic demands. It has a double-earthed system and anti-static earthed ventilation hose that prevents static electricity and sparks. Open support arm system and hood of acid proofed polished stainless steel requires a minimum of maintenance and makes it easy to clean. The NEX S is not marked with the EX symbol since it does not fall under the scope of the directive 2014/34/EU. Even if it does not have the EX marking, it is highly suitable for use in zones 1/21, 2/22 according to ATEX-work directive 1999/92/EC. The arm is double-earthed, by the helix in the hose and through the arm system. The hose is made of anti-static Polyurethane.