The chameleon exg is made to comply with exacting atex standards atex directives 9992ec and 949ec and is made from the highest quality materials to give a fully corrosion resistant construction using 304 brushed stainless steel and marine grade aluminium alloy it is suitable for use in zones 2 and 1 atmospheres where flammable gasesvapours are likely to arise and zones 22 and 21 atmospheres where combustible dustpowder may be present