Heading 7017: Laboratory, hygienic or pharmaceutical glassware, whether or not graduated or calibrated:

Of fused quartz or other fused silica Quartz reactor tubes and holders designed for insertion into diffusion and oxidation furnaces for production of semiconductor wafers

Of fused quartz or other fused silica Other

Laboratory, hygienic or pharmaceutical glassware, whether or not graduated or calibrated Of other glass having a linear coefficient of expansion not exceeding 5 x 10-6 per Kelvin within a temperature range of 0°C to 300°C

Other Microscope slides and micro cover glasses

Other Other