Laboratory Analytical Instruments [SIC 3826] [NAICS 334516] Establishments primarily engaged in manufacturing laboratory instruments and instrumentation systems for chemical or physical analysis of the composition or concentration of samples of solid, fluid, gaseous, or composite material. Establishments primarily engaged in manufacturing instruments for monitoring and analyzing continuous samples from medical patients are classified in Industry 3845, and from industrial process streams are classified in Industry 3823. Amino acid analyzers, laboratory type Automatic chemical analyzers, laboratory type Chromatographic instruments, laboratory type Colorimeters, laboratory type Coulometric analyzers, laboratory type Densitometers, analytical Differential thermal analysis instruments Electrolytic conductivity instruments, laboratory type Electron paramagnetic spin type apparatus Electrophoresis instruments Elemental analyzers (CHNOS) Flame photometers Gas analyzers, laboratory type Gas chromatographic instruments, laboratory type Infrared type analytical instruments, laboratory type Liquid chromatographic instruments, laboratory type Magnetic resonance imaging type apparatus, except diagnostic Mass spectrometers Mass spectroscopy instrumentation Microprobes: electron, ion, laser, X-ray Microscopes, electron and proton Moisture analyzers, laboratory type Monochrometers, laboratory type Nephelometers, except meteorological Neutron activation analysis instruments Osmometers Particle size analyzers Photometers, except photographic exposure meters Polariscopes Polarizers Polarographic equipment Protein analyzers, laboratory type Redox (oxidation-reduction potential) instruments Refractometers, laboratory Specific ion measuring instruments, laboratory type Spectrofluorometers Spectrographs Spectrometers: electron diffraction, mass, nmr, raman, x-ray Spectrophotometers: atomic absorption, atomic emission, flame, Surface area analyzers Thermal analysis instruments, laboratory type Thermal conductivity instruments and sensors Thermogravimetric analyzers Titrimeters Turbidometers Ultraviolet-type analytical instruments 334516 Analytical Laboratory Instrument Manufacturing This U.S. industry comprises establishments primarily engaged in manufacturing instruments and instrumentation systems for laboratory analysis of the chemical or physical composition or concentration of samples of solid, fluid, gaseous, or composite material.