Oswald diagram

Oswald diagram

[′äz‚wȯld ′dī·ə‚gram]
(analytical chemistry)
Diagram used in fuel Orsat analyses by plotting percent by volume CO2(carbon dioxide) maximum in the fuel [ordinate] versus percent by volume O2(oxygen) in air [abscissa]; O2 and CO2 Orsat readings should fall on a line connecting these maximum values if the analysis is proceeding properly.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.