Stirrer comprising a sealed package which holds therein a liquid

A stirrer comprising a sealed package which holds therein a liquid and which comprises a first film and a second film sealingly joined to each other, said films being fluid tight and fully enclosing therebetween an elongate volume in which the liquid is sealingly retained, wherein the package has a first openable portion at one end and a second openable portion at an opposite end such that when both openable portions are opened the liquid is able to flow out of the opened first openable portion and the second openable portion acts as a vent, wherein each openable portion comprises at least one of the two films having a grippable tab which can be manipulated to peel apart the joint between the films, wherein the joint between the films is weaker in the region of each openable portion compared to the joint on sides of the openable portion, thereby resisting separation of the films beyond a predetermined amount at each openable portion, wherein the stirrer comprises one or more further sealed elongate volumes, each having a first and a second openable portion and each containing a liquid, wherein the sealed elongate volumes extend in a same lengthwise direction as each other and are laterally offset from each other, wherein the openable portions of each elongate volume are separately openable to dispense separately the individual liquids contained in the elongate volumes, wherein a length of each elongate volume is different such that the first openable portions are at different locations in the lengthwise direction, and wherein a single grippable tab of at least one of the two films opens the first openable portions sequentially.