Mixing and dispensing apparatus

An apparatus comprising

• a container including first and second chambers which are adapted to house a liquid and a solid, respectively, first sealing means fabricated from a resiliently flexible material for forming a sealing engagement with an internal surface of the container intermediate the first and second chambers so as to form a barrier between the chambers, a dispenser plunger means comprising sequentially in the upward vertical direction:
• a second sealing means portion fabricated from a resiliently flexible material;
• a hollow substantially cylindrical body portion;
• and
• a substantially flat top portion;
• and wherein said second sealing means portion of said dispenser plunger forms a sealing engagement with an internal surface of the container intermediate the second chamber and a peripheral space external to the container;
• and wherein a transmitting means comprising a collar portion is adapted to selectively contact the underside of said second sealing means portion to transmit force applied from said dispenser plunger means to said first sealing means, whereby the first sealing means can be displaced into the first chamber so as to allow the two chambers to communicate one with the other and thus allow a mixing of said solid which is housed in the second chamber with said liquid which is housed in the first chamber, and wherein following said mixing, the dispenser plunger permits the sterile withdrawal of mixed solution through its top portion without unsealing said second sealing means.