Wearing a red chemical into the bag, the bag over and check that the absorbed chemical permeation through the welded red seals or zipper? If ถิอ not ingress through the
Put chemicals in red bags. To seep around the bag and check that the red substance absorbed through the zipper seal, or if that does not pass the permeability Tiื.
Reagent red into the bag to permeate throughout the bag and check that the chemicals absorbed through the red seal or zipper? If absorbed through thi is that failed.