90278100

HS code 90278100 (Chapter 90 "Optical, measuring, medical instruments"; Heading 9027 "Instruments and apparatus for physical or chemical analysis (for example, polarimeters, refracto-meters, spectrometers, gas or smoke analysis app-aratus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes"; Subheading 902781 "Mass spectrometers") under the Vietnam tariff schedule classifies "- - Mass spectrometers". Vietnam customs apply MFN rate of 5, Preferential rate 0. Statutory unit of measure: unit. 23 free trade agreement preferential rates are available for this code.