Definitions of electrostatic FIBCs
 

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Type A	Normal bags without any electric properties, not suitable to be used for handling combustible dust	zones none
Type B	Made from normal fabric having a breakdown voltage less than 6 kV	zones 21, 22
Type C	Fabric with interwoven conductive threads being interconnected to all parts of the bag and to an earthing flap with less than 107 ohms	zones 1, 2, 21, 22
Type D	Fabric with a system of conductive fibres and/or special coating, no interconnection between the parts of the bag, no earthing	zones (1), 2, (21), 22
Note: The details in this table have been abbreviated to provide a quick overview.

Type A

Plain Bag – No Static Protection

Safe use:

• To transport non-flammable products
• No flammable solvents or gases present around the bag

 

Type B

Plain Bag – Low Breakdown Voltage
Prevents Propagating Brush Discharges

Safe use:

• To transport dry, flammable powders
• No flammable solvents or gases present around the bag

 

Type C

Interconnected Conductive Threads Dissipates Charge to Ground R_G < 10⁸ ohm

Safe use:

• To transport flammable powders
• When flammable solvents or gases are present around the bag

 

Type D

Does Not Require Grounding/Earthing

Safe use:

• To transport flammable powders
• When flammable solvents or gases are present around the bag