... /T13508 test standards.2. Benefits of the vents Molded ComponentsePTFE membrane has good chemical inertness, UV, non-flammable and ... such as bleach, hydrogen peroxide, peracetic acid, pesticides, cleaning agents, fungicides, etc., or strong acid and alkali solution or ... -corrosion acid and alkali resistance , solve the problem of chemical solution leaking from the bottle containers (barrels) cover. ...