Section 13 Articles of stone, plaster,cement,asbestos, mica or similar materials; ceramic products; glass and glassware 70 Glass and glassware 70 17 Laboratory, hygienic or pharmaceutical glassware, whether or not graduated or calibrated Commodity Code Description 70 17 10 Of fused quartz or other fused silica 70 17 20 Of other glass having a linear coefficient of expansion <5x10-6 per Kelvin within a .... 70 17 90 Other