Examples are well known in the art and include magnesium sulfate; magnesium chloride; potassium sulfate; sodium chloride; sodium sulfate; lithium sulfate; sodium phosphate; potassium phosphate; d-mannitol; sorbitol; inositol; urea; magnesium succinate; tartaric acid; raffinose and various monosaccharides; oligosaccharides and polysaccharides, such as sucrose, glucose, lactose, fructose, and dextra