Glass envelopes (including bulbs and tubes), open, and glass parts thereof, without fittings, for electric lamps and light sources, cathode-ray tubes or the like — For cathode-ray tubes

Signalling glassware and optical elements of glass (other than those of heading 70.15), not optically worked, other

Glass in balls (other than microspheres of heading 70.18), rods or tubes, unworked — Of a kind used to manufacture vacuum tubes

Glass in balls (other than microspheres of heading 70.18), rods or tubes, unworked — Borosilicate glass tubes of a kind used to manufacture phial/ampoules

Laboratory, hygienic or pharmaceutical glassware, whether or not graduated or calibrated; Of fused quartz or other fused silica, other

Glass of heading 70.03, 70.04 or 70.05, bent, edge-worked, engraved, drilled, enamelled or otherwise worked, but not framed or fitted with other materials — Optical glass, not optically worked

Glass in balls (other than microspheres of heading 70.18), rods or tubes, unworked — Other, of clear neutral borosilicate glass, with a diameter of 3 mm or more but not more than 22 mm

Carboys, bottles, flasks, jars, pots, phials, ampoules and other containers, of glass, of a kind used for the conveyance or packing of goods; preserving jars of glass; stoppers, lids and other closures, of glass — Ampoules

Drawn glass and blown glass, in sheets, whether or not having an absorbent, reflecting or non-reflecting layer, but not otherwise worked — Optical glass, not optically worked