… polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for … viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking …
Explanatory notes
… polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for … viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking … (including exposure meters); microtomes. 9027.10 ‑ Gas or smoke analysis apparatus 9027.20 ‑ Chromatographs and …