490	LABORATORY EQUIPMENT AND ACCESSORIES (FOR GENERAL ANALYTICAL AND RESEARCH USE): NUCLEAR, OPTICAL, AND PHYSICAL
49006  *	Barometers and Manometers, Laboratory Type
49008  *	Calorimeters and Accessories
49009  *	Centrifuges, Desk Top and Free Standing
49014  *	Cleaners, Ultrasonic
49015  *	Colorimeters, Reflectance
49016  *	Colorimeters, Optical, Comparators (See Class 493 for Photoelectric Colorimeters)
49018  *	Cytopathology Analyzer
49019  *	Density Gradient Equipment: Fractionators, Mixers, etc.
49021  *	Dry Boxes and Glove Boxes
49024  *	Dynamometers (For Automotive, see Class 075)
49029  *	Electron Microscopy Equipment: Electron Microscopes, Vacuum Sputtering Systems, etc.
49032  *	Environmental Test Chambers and Rooms (Controlled Temperature, Humidity, etc.)
49034  *	Filters, Optical: IR Interference, etc.
49035  *	Gamma Ray Spectroscopy Detector
49036  *	Glassware Washing Apparatus
49039  *	High-Pressure Equipment and Accessories
49044  *	Lamps and Other Radiation Sources, Specialized: Cathode, Infrared, and  Ultraviolet Lamps, etc.
49047  *	Liquid Scintillation Counting Systems
49051  *	Lasers, Masers, and Accessories
49052  *	Leak Detectors, Vacuum: Helium, Ultrasonic, etc.
49053  *	Magnetic Equipment: Demagnetizers, Electromagnets, Fluxmeters, Gaussmeters, Magnetometers, etc.
49055  *	Mass Spectrometers and Accessories
49056  *	Micromanipulators
49057  *	Microscope Accessories: Adapters, Condensers, Filters, Illuminators, Lenses, etc.
49058  *	Microscopes, All Types (For Electron, see Class 490-29 -- For Operating Room, see Class 465)
49065  *	Nuclear Equipment and Accessories: Magnetic Shielding, Particle Accelerators, Counters (Research Type), Scintillating Crystals, etc.
49068  *	Nuclear Magnetic Resonance (NMR) Apparatus
49069  *	Nuclear Radiation Sources (Not for Medical Use)
49071  *	Nuclear Safety Equipment and Supplies: Dosimeters, Film Badges, Lead Shielding, Radiation Monitors, Survey Meters (For Warning 
	Tape, see Class 832)
49072  *	Optical Laboratory Equipment: Beam Splitters, Choppers, Diffraction Gratings, Interferometers, Monochromators, Optical Benches 
	and Tables, etc.
49073  *	Photometers, Reflectance
49074  *	Physics Equipment (Not Otherwise Classified)
49075  *	Personnel Monitoring (ETO, Formaldehyde)
49077  *	Pumps, Liquid (Laboratory Type): Metering, Peristaltic, Syringe, etc.
49078  *	Pumps, Vacuum and Pressure/Vacuum
49079  *	Radioactive Waste Disposal Systems and Accessories
49080  *	Sorption Measurement Systems (For Surface Area of Fine Particles, etc.)
49084  *	Spectrometers: Auger, Electron Energy Loss, X-Ray Frequency, etc. (For Mass Spectrometers, see 490-55)
49088  *	Spectroscopes, Direct Reading
49090  *	Testing Instruments (Not Otherwise Classified)
49092  *	Thermal Analysis, Thermogravimetry, and Thermal Conductivity Apparatus
49093  *	Ultrasonic Equipment (For Research): Ultrasound Interferometers, Pulse Generators, etc.
49094  *	Vibration Isolation Supports
49096  *	X-Ray Diffraction and Electron Diffraction Equipment