A multi-point chemical species separation process which is compatible with rapid gradient echo imaging such as SSFP uses an iterative least squares method that decomposes water and fat images from source images acquired at short echo time increments. The body further includes a passage and a channel, such that the passage connects the channel to the cavity. In image reproduction six primary valences are produced, which respectively comprise the image information of the shorter and the longer wavelength parts of each of the individual principle color spectral regions. The hydraulic circuit is defined as including an inlet conduit connectable to tank, an outlet conduit connectable to the battery cell, and a vacuum source connectable to the battery cell and to the tank.