| Items and materials that may be commonplace | | | | Corrosives. Drain cleaners, car batteries, |
| and necessary at home or in the workplace are | | | | wet cell batteries, acids, alkalis, lye, |
| sometimes banned inside aircrafts because of | | | | mercury. |
| the dangers they pose to both passengers and | | | | |
| crew. It therefore becomes important to check | | | | Organics. Fiberglass resins, peroxides. |
| with the airline which items they allow as | | | | |
| carry-on luggage or as checked baggage, or | | | | Radioactive materials. Smoke detectors, |
| banned altogether. | | | | radioactive pharmaceuticals, and other |
| | | | radioactive materials. |
| The following are the categories of items | | | | |
| proscribed by the Transport Security | | | | Dry ice (frozen carbon dioxide). Up to four |
| Administration from being boarded in aircraft | | | | pounds (1.8 kg) is allowed on board for |
| cabins: | | | | packing perishables, providing that the |
| | | | package is vented. |
| Explosives and firearms. Matches, sparklers, | | | | |
| other fireworks, flares, gunpowder, | | | | Magnetic materials. Strong magnets such as |
| ammunition or other ordnance, blasting caps, | | | | those in loudspeakers and laboratory |
| dynamite, loaded firearms. | | | | equipment. |
| | | | |
| Other weapons. Knives of any kind, throwing | | | | Other items. Wet-cell batteries, chemical |
| stars, swords, or other items used in martial | | | | oxygen generators (used or unused) or any |
| arts competitions. Rules in other countries | | | | equipment containing fuel or other flammable |
| will differ on transporting knives and other | | | | liquids. |
| weapons. | | | | |
| | | | In light of 9/11, TSA also began regulating |
| Gases and pressure containers. Flammable | | | | the carriage of the following items on board |
| aerosols like hair spray, spray paint or | | | | aircrafts:sition, including carpet knives and |
| insect repellant; carbon dioxide cartridges, | | | | box cutters (and spare blades), any device |
| oxygen tanks (scuba or medical), mace, tear | | | | with a folding or retractable blade, ice |
| gas, pepper spray, self-inflating rafts, and | | | | picks, straight razors, and metal scissors |
| deeply refrigerated gases such as liquid | | | | with pointed tips. |
| nitrogen. | | | | |
| | | | Corkscrews. |
| Flammable liquids and solids. Gasoline, | | | | |
| propane, butane and other fuels, lights with | | | | Lighters, lighter fluid, and strike-anywhere |
| flammable reservoirs, matches, flammable | | | | matches. However, up to four books of safety |
| paints, paint thinners, some cleaning | | | | matches are allowable. |
| solvents, some adhesives, cigarette lighters, | | | | |
| and lighter fluid. Personal care items such | | | | Baseball and softball bats. |
| as flammable perfume and such may be carried | | | | |
| on board in limited quantities. | | | | Golf clubs. |
| | | | |
| Oxidizers and organic peroxides. Bleach, | | | | Pool cues. |
| nitric acid, fertilizers, swimming pool or | | | | |
| spa chemicals, and fiberglass repair kits. | | | | Ski poles. |
| | | | |
| Poisons. Weed killers, pesticides rodent | | | | Hockey sticks. |
| poisons, arsenic and cyanides. | | | | |
| | | | What is allowed and what is not allowed |
| Infectious materials. Medical laboratory | | | | varies among airline companies. Just to be |
| specimens, viral organisms, bacterial | | | | sure, always check with the air carrier as to |
| cultures. | | | | what kind of baggage they allow before |
| | | | booking. |