… Instruments and apparatus for physical or chemical analysis (for example, polarimeters, … apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or …
Explanatory notes
… 90.27 ‑ Instruments and apparatus for physical or chemical analysis (for example, polarimeters, … apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or … 9027.10 ‑ Gas or smoke analysis apparatus 9027.20 ‑ Chromatographs and electrophoresis instruments 9027.30 ‑ …