This section applies for the purposes of section 62 above.

Cider which is for the time being in a closed bottle is sparkling if, due to the presence of carbon dioxide, the pressure in the bottle, measured at a temperature of 20 degrees C, is not less than 3 bars in excess of atmospheric pressure.

Cider which is for the time being in a closed bottle is sparkling regardless of the pressure in the bottle if the bottle has a mushroom-shaped stopper (whether solid or hollow) held in place by a tie or fastening.

Cider which is not for the time being in a closed container is sparkling if it has characteristics similar to those of cider which has been removed from a closed bottle and which, before removal, fell within subsection (2) above.

Cider which has not previously been rendered sparkling by virtue of subsection (5) above shall be regarded as having been rendered sparkling if it is transferred into a closed bottle which has a mushroom-shaped stopper (whether solid or hollow) held in place by a tie or fastening.

Cider which is in a closed bottle and has not previously been rendered sparkling by virtue of subsection (5) or (6) above shall be regarded as having been rendered sparkling if the stopper of its bottle is exchanged for a stopper of a kind mentioned in subsection (6) above.