265153 Instruments and apparatus for physical or chemical analysis n.e.c.

26515313 Electronic gas or smoke analysers 26515319 Non-electronic gas or smoke analysers 26515320 Chromatographs and electrophoresis instruments 26515330 Spectrometers, spectrophotometers... using optical radiations 26515350 Instruments and apparatus using optical radiations, n.e.c. 26515381 Electronic ph and rh meters, other apparatus for measuring conductivity and electrochemical quantities (including use laboratory/field environment, use process monitoring/control) 26515383 Other electronic instruments and apparatus 26515390 Other instruments and apparatus for physical or chemical analysis n.e.c.