title: An automatic interference refractometer.
abstract: Interference refractometry is a well-established method of determining the concentration of anaesthetic agents in gas mixtures. A photo-electric detector system has been fitted to a small portable, direct-reading interference refractometer to display automatically the concentration of the agent being measured. The design of the instrument is described and two possible methods of information display are suggested.
mesh_terms: D000777:Anesthetics / Q000032:analysis*; D001322:Autoanalysis / Q000295:instrumentation; D007368:Interferometry / Q000295:instrumentation; D008027:Light; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods
chemical_list: D000777:Anesthetics