ON THE DIFFUSIBILITY OF THE CALCIUM OF BLOOD SERUM THROUGH COLLODION MEMBRANES : THE EFFECT OF SODIUM CHLORIDE AND CHANGES IN HYDROGEN ION CONCENTRATION.
1. Serum calcium is completely diffusible through collodion membranes in 0.8 per cent NaCl at a pH of 7.4. 2. About 55 to 75 per cent of serum Ca is diffusible through collodion membranes in distilled water at a pH of 7.4. 3. Serum Ca is completely diffusible when dialyzed against HCl at a pH of 2.5.
Loeb
R F
RF
Department of Medicine of the College of Physicians and Surgeons of Columbia University, and the Presbyterian Hospital, New York.