Fig. 6. The water loss from 22 cattle (white), pig (black), and anaerobically digested (gray) slurries as a function of slurry organic matter content for three selected water potentials. Water was extracted by dialysis with solutions of polyethylene glycol (30, 60, and 90 g L^-1). Except for two outliers (square symbols), all measurements accommodated the relationship relative water loss = 1/(1 + aVS); VS = volatile solids, values of a (a function of water potential) (± SE) are inserted in the three plots.