The continuous removal of oxygen from flowing solutions

An apparatus for continuous removal of oxygen or other dissolved gases from liquid samples is described; it is useful in continuous analyses. The gas diffuses through a semipermeable membrane into a space with a lower partial pressure of the particular gas. The separation unit consists of two concentric tubes and is practical and efficient. The mathematical model for transport under conditions of stationary gas diffusion with laminar flow of the liquid in the tube did not correspond satisfactorily to the experimental relationship, probably because of turbulence in the flow.