Abstract: A tip assembly comprising a body defining a first end, a second end opposite the first end, and a plurality of chambers therein, the plurality of chambers comprising: an intake chamber defining an inlet a the second end for passing a biological sample and comprising an intake piston positioned at least partially in the intake chamber; an output chamber defining an outlet at the second end for passing the biological sample and comprising an output piston positioned at least partially in the chamber; a mixing chamber positioned between the intake chamber and the output chamber and comprising a mixing piston positioned at least partially in the mixing chamber; a primary channel extending between the intake chamber and the mixing chamber; and a secondary channel extending between the mixing chamber and the output chamber.

Abstract: The present disclosure provides, among other things, devices and methods for harvesting algae (e.g., microalgae) from algae culture growth media to produce a dried algae product and purified water.

Abstract: A fecal grinder assembly includes a container defining an open interior volume and a plurality of container teeth extending from a bottom wall of the container and within the open interior volume, a grinder slidably positioned within the open interior volume of the container, the grinder including a base and a key extending from the base in a first direction and a plurality of grinder teeth extending from the base in a second direction opposite the first direction, and a collection member including a filter portion and a collection body extending from the filter portion, a keyway extends through the filter and the body for receiving the key of the grinder when the collection member is positioned on the grinder and within the open interior volume of the container.