Apparatus and method for testing liquids

摘要

PCT No. PCT/GB86/00286 Sec. 371 Date Feb. 9, 1987 Sec. 102(e) Date Feb. 9, 1987 PCT Filed May 21, 1986 PCT Pub. No. WO86/07150 PCT Pub. Date Dec. 4, 1986.The application relates to a method and apparatus for testing the concentration of a selected atomic scale species in a thick liquid, such as blood. The blood flows through a chamber that is in part defined by a microporous dialysis membrane permeable to atomic scale species. A measuring cell including a second chamber filled with a clean liquid is defined by the other plane of the membrane. The measuring cell incorporates a sensor having an electrode coated with a material permeable only to a selected ionic species.