System and apparatus for isolating or enriching agents using floatation

An apparatus for isolation or enrichment of biological agents from a sample comprising:

• a sample container comprising:
• (a) an inner volume;
• (b) a tapered end and an open end;
• (c) a directionally oriented container spout projecting from an apex of the tapered end at an acute angle relative to a horizontal axis of said sample container, the spout further comprising a tip, the tip also forming an acute angle relative to the horizontal axis of said sample container;
• and
• d) a plunger inserted into said open end;
• wherein the acute angle of the tip can be;
• the same as the acute angle of the container spout,
• can be different than the acute angle of the container spout, or
• can be more acute than the acute angle of the container spout;
• wherein when a sample comprising a plurality of microbubbles is added to said sample container, at least one microbubble of said plurality of microbubbles floats one or more biological agents of said sample, and
• wherein when said plunger is towards said tapered end, said plurality of microbubbles collect in the directionally oriented container spout, and said one or more biological agents from said sample are isolated or enriched to form one or more droplets at said tip.