Arrowhead Heavy Duty Barrier Heat Seal Bags
These 5mil nylon pouches are designed to eliminate the problem of narcotic gasses leaking through normal polyethylene baggies. These bags will eliminate the odors associated with narcotics evidence. They also protect the evidence custodian from exposure to narcotics evidence and the mold and fungus that can grow when non-barrier bags are used. They can be sealed with any quality heat sealer.
Arrowhead Forensics