Instruments and apparatus; for physical or chemical analysis, for measuring or checking viscosity, porosity, expansion, surface tension or quantities of heat, sound or light, mass spectrometers

Instruments and apparatus; gas or smoke analysis apparatus, for physical or chemical analysis

Chromatographs and electrophoresis instruments

Spectrometers, spectrophotometers and spectrographs; using optical radiations (UV, visible, IR)

Instruments and apparatus; using optical radiations (UV, visible, IR), (other than spectrometers, spectrophotometers and spectrographs)

Instruments and apparatus; for physical or chemical analysis, for measuring or checking viscosity, porosity, expansion, surface tension or quantities of heat, sound or light, exposure meters

Microtomes and parts and accessories thereof