|
| 490 06 | BAROMETERS AND MANOMETERS, LABORATORY |
| 490 07 | CABINETS, SAFETY, LABORATORY |
| 490 08 | CALORIMETERS AND ACCESSORIES, LABORATORY |
| 490 09 | CENTRIFUGES, DESK TOP AND FREE STANDING, LABORATORY |
| 490 14 | CLEANERS, ULTRASONIC, LABORATORY , |
| 490 15 | COLORIMETERS, REFLECTANCE, LABORATORY |
| 490 16 | COLORIMETERS, OPTICAL, COMPARATORS, LABORATORY, (SEE CLASS 493 FOR PHOTOELECTRIC COLORIMETERS) |
| 490 17 | CRYSTALLOGRAPHY EQUIPMENT AND SUPPLIES, LABORATORY, (NOT OTHERWISE CLASSIFIED) |
| 490 19 | DENSITY GRADIENT EQUIPMENT, LABORATORY: FRACTIONATORS, MIXERS, ETC. |
| 490 21 | DRY BOXES AND GLOVE BOXES, LABORATORY |
| 490 24 | DYNAMOMETERS, LABORATORY, (SEE 075 FOR AUTOMOTIVE) |
| 490 29 | ELECTRON MICROSCOPY EQUIPMENT, LABORATORY: ELECTRON MICROSCOPES, VACUUM SPUTTERING SYSTEMS, ETC. |
| 490 30 | ELECTRON GUNS, LABORATORY |
| 490 32 | ENVIRONMENTAL TEST CHAMBERS AND ROOMS, LABORATORY |
| 490 34 | FILTERS, OPTICAL: IR INTERFERENCE, ETC., LABORATORY |
| 490 36 | GLASSWARE WASHING APPARATUS, LABORATORY |
| 490 39 | HIGH-PRESSURE EQUIPMENT AND ACCESSORIES, LABORATORY |
| 490 40 | HIGH VACUUM FITTINGS, VALVES, SUPPLIES, ETC., LABORATORY . |
| 490 43 | LABORATORY AND SCIENTIFIC EQUIPMENT AND SUPPLIES (NOT OTHERWISE CLASSIFIED) |
| 490 44 | LAMPS AND OTHER RADIATION SOURCES, SPECIALIZED, LABORATORY, CATHODE, INFRARED, AND ULTRAVIOLET LAMPS, ETC. |
| 490 47 | LIQUID SCINTILLATION COUNTING SYSTEMS, LABORATORY |
| 490 51 | LASERS, MASERS, AND ACCESSORIES, LABORATORY |
| 490 52 | LEAK DETECTORS, VACUUM: HELIUM, ULTRASONIC, ETC., LABORATORY |
| 490 53 | MAGNETIC EQUIPMENT, LABORATORY: DEMAGNETIZERS, ELECTROMAGNETS, FLUXMETERS, GAUSSMETERS, MAGNETOMETERS, ETC. |
| 490 55 | MASS SPECTROMETERS AND ACCESSORIES, LABORATORY |
| 490 56 | MICROMANIPULATOR, LABORATORY , |
| 490 57 | MICROSCOPE ACCESSORIES: ADAPTERS, CONDENSERS, FILTERS, ILLUMINATORS, LENSES, ETC., LABORATORY |
| 490 58 | MICROSCOPES, ALL TYPES, (SEE 490-29 FOR ELECTRON AND SEE 465 FOR OPERATING ROOM) |
| 490 63 | NATURAL SCIENCE EQUIPMENT AND SUPPLIES, LABORATORY |
| 490 65 | NUCLEAR EQUIPMENT AND ACCESSORIES, LABORATORY: MAGNETIC SHIELDING, PARTICLE ACCELERATORS, COUNTERS (RESEARCH TYPE), SCINTILLATING CRYSTALS, ETC. |
| 490 68 | NUCLEAR MAGNETIC RESONANCE (NMR) APPARATUS, LABORATORY |
| 490 69 | NUCLEAR RADIATION SOURCES, LABORATORY, NOT FOR MEDICAL USE |
| 490 71 | NUCLEAR SAFETY EQUIPMENT AND SUPPLIES, LABORATORY: DOSIMETERS, FILM BADGES, LEAD SHIELDING, RADIATION MONITORS, SURVEY METERS, (SEE CLASS 832 FOR WARNING TAPE) |
| 490 72 | OPTICAL LABORATORY EQUIPMENT: BEAM SPLITTERS, CHOPPERS, DIFFRACTION GRATINGS, INTERFEROMETERS, MONOCHROMATORS, OPTICAL BENCHES AND TABLES, ETC. |
| 490 73 | PHOTOMETERS, REFLECTANCE, LABORATORY |
| 490 74 | PHYSICS EQUIPMENT, LABORATORY, (NOT OTHERWISE CLASSIFIED) |
| 490 75 | PLASMA GENERATORS, LABORATORY |
| 490 76 | PLASTICIZERS, LABORATORY: AGRICULTURE OILS, GLUTARATES, PHTHALATES, POLYMERICS, SULFONAMIDES, ETC. |
| 490 77 | PUMPS, LIQUID, LABORATORY: METERING, PERISTALTIC, SYRINGE, ETC. |
| 490 78 | PUMPS, VACUUM AND PRESSURE VACUUM, LABORATORY |
| 490 79 | RADIOACTIVE WASTE DISPOSAL SYSTEMS AND ACCESSORIES, LABORATORY |
| 490 80 | SORPTION MEASUREMENT SYSTEMS, LABORATORY, FOR SURFACE AREA OF FINE PARTICLES, ETC. |
| 490 81 | SEMICONDUCTOR DEVICES, LABORATORY |
| 490 82 | SEPARATORS, LABORATORY |
| 490 83 | SPECTROGRAPHS, LABORATORY |
| 490 84 | SPECTROMETERS, LABORATORY: AUGER, ELECTRON ENERGY LOSS, X-RAY FREQUENCY, ETC. (SEE 490-55 FOR MASS SPECTROMETERS) |
| 490 88 | SPECTROSCOPES, DIRECT READING, LABORATORY |
| 490 90 | TESTING INSTRUMENTS, LABORATORY, (NOT OTHERWISE CLASSIFIED) |
| 490 92 | THERMAL ANALYSIS, THERMOGRAVIMETRY, AND THERMAL CONDUCTIVITY APPARATUS, LABORATORY |
| 490 93 | ULTRASONIC EQUIPMENT, LABORATORY, RESEARCH: ULTRASOUND INTERFEROMETERS, PULSE GENERATORS, ETC. |
| 490 94 | VIBRATION ISOLATION SUPPORTS, LABORATORY |
| 490 95 | VACUUM EQUIPMENT, LABORATORY, (NOT OTHERWISE CLASSIFIED) |
| 490 96 | X-RAY DIFFRACTION AND ELECTRON DIFFRACTION EQUIPMENT, LABORATORY |
| 490 97 | RECYCLED NUCLEAR, OPTICAL AND PHYSICAL LABORATORY EQUIPMENT AND SUPPLIES |