|
| 430 12 | CONTAINERS, LIQUEFIED GASES, LARGE DEWARS (SEE CLASS 175 FOR LABORATORY SIZES) |
| 430 20 | FILTERS, NATURAL AND LPG GAS |
| 430 24 | GAS CYLINDER CARTS, CLAMPS, AND STANDS, HOSPITAL AND LABORATORY TYPE |
| 430 27 | GAS CYLINDERS, EMPTY, COMMERCIAL SIZES |
| 430 30 | GASES, RADIOACTIVE COUNTING: METHANE, PR-GAS, Q-GAS, ETC. |
| 430 32 | GAS DISTRIBUTION EQUIPMENT, COMPONENTS AND FITTINGS |
| 430 33 | GAS MIXTURES, SPECIAL PURPOSE |
| 430 36 | GAS REGULATORS, GAUGES, FITTINGS, AND PARTS |
| 430 42 | LABORATORY GASES: ARGON, CARBON DIOXIDE, HELIUM, HYDROGEN, NITROGEN, ETC. |
| 430 48 | MEDICAL GASES, ANESTHESIA AND RESPIRATION THERAPY: CARBON DIOXIDE, CYCLOPROPANE, NITROUS OXIDE, PURE OXYGEN, ETC. |
| 430 51 | NOBLE (INERT) GASES: ARGON, HELIUM, KRYPTON, NEON, RADON, XENON |
| 430 62 | PURE (ELEMENTAL) GASES (NOT OTHERWISE CLASSIFIED) |
| 430 63 | PURIFIERS, FOR GASES: SODA LIME, ETC. |
| 430 72 | RARE OR HIGHLY PURIFIED GASES, FOR RESEARCH USES, ETC. |
| 430 75 | RECYCLED GASES AND CONTAINERS |
| 430 84 | STERILIZING GASES: ETHYLENE OXIDE, ETC. |
| 430 92 | WELDING AND INDUSTRIAL GASES: ACETYLENE, ARGON, CARBON DIOXIDE, OXYGEN, ETC. |