Packaging for altering the composition of a liquid

摘要

PCT No. PCT/FR89/00559 Sec. 371 Date Apr. 29, 1991 Sec. 102(e) Date Apr. 29, 1991 PCT Filed Oct. 26, 1989 PCT Pub. No. WO90/04547 PCT Pub. Date May 3, 1990.A package for a liquid which is purified includes a neck with a lock-chamber slidable therein. The lock-chamber includes a purifying substance through which the liquid passes when dispensed. At one end of the lock chamber, a plug is positioned to block passage of the liquid through the lock-chamber when the lock-chamber is projected from the neck and to allow passage of the liquid when the lock-chamber is pushed down into the neck.