Methods and apparatuses for determining entrained and/or dissolved gas content of gas-liquid mixtures. Data generated is used to control the True (air-free) or Apparent (air-containing) Density or Entrained Air content of liquids within optimum ranges, e.g. in paper coating processes and in the manufacture...http://www.google.com/patents/US6847898?utm_source=gb-gplus-sharePatent US6847898 - Real time determination of gas solubility and related parameters in manufacturing processes
