Abstract: An embodiment of the invention provides a system for toxicity identification in water. The system includes a cell maintenance device having a cooling component that maintains an internal storage area of the cell maintenance device within a temperature range of 4 degrees Celsius to 25 degrees Celsius. Fluidic biochips in the cell maintenance device include one or more testing components for receiving living poikilothermic cells and at least one water test sample. A test unit receives the fluidic biochips and monitors a response to exposure of the poikilothermic cells to the water test sample. In at least one embodiment, the test unit is able to identify the degree of toxicity of the water sample within 60 minutes of receiving the fluidic biochip.

Abstract: A leg exerciser is provided allowing exercise while the user is seated or stationary. The leg exerciser includes a base member having at least one longitudinally extending track configured to accommodate a foot pad having a plurality of gliders and/or rollers coupled to the bottom of the foot pad and providing a sufficient coefficient of friction to allow the foot pad to smoothly slide within the track. Various alternative configurations provide foldable construction for ease of travel, mounting devices for securing the leg exerciser to a seat, non-removable foot pads and various configurations to provide for variations in travel and/or effort required for movement of the foot pad.