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 not exceeding 5 x 106 per Kelvin within a temperature range of 0oC to 300oC 70 17 90 Other