A simplified method for measurement of Ca++-activity in serum, using serum-monovettes® and a Ca++-selective disk-electrode

Abstract
A simplified method for the anaerobe measurement of ionized calcium in serum of venous blood by use of ion-selective electrodes—the monovette®-technique—is described. For estimation of Ca++ a new electrode type—the disk-electrode [11, 12, 13, 14]—charged with a synthetic, electrically neutral Ca++-carrier of the octandioic acid-type [1], is tested.