TYPE A: THEY ARE NOT INTENDED FOR USE IN POTENCIALLY EXPLOSIVE ATMOSPHERES TYPE B: CONSTRUCTED FROM INSULATING FABRIC BUT HAS A BREAKDOWN VOLTAGE LESS THAN 4kV TYPE B BAGS MAY BE USED IN THE PRESENCE OF COMBUSTABLE DUSTS WITH MIE OF GREATER THAN 3mj BUT IN THE ABSENCE OF FLAMMABLE VAPOURS OR GASES. TYPE C OR CONDUCTIVE BAGS: CONSTRUCTED FROM FABRICS HAVING CONDUCTIVE THREADS. MAY BE USED WHERE COMBUSTABLE DUSTS AND FLAMMABLE ATMOSPHERE WITH MIE OF 3mj OR LESS ARE PRESENT. SESAN GUARANTEES A SAFE DISCHARGE IF THEY ARE PROPERLY GROUNDED IN SUCH CONDITIONS