Excerpt from The Analytical Distillation of Petroleum and Its Products The bureau has recommended a distillation method for testing gasoline and certain other refined products. The requirements of this particular type of analysis, namely, a convenient and moderately accurate basis of comparison, are notably different from those of the analysis of crude petroleum. The modified A. S. T. M. Method recommended by the bureau 3 and adopted by various organizations and laboratories, provides a simple means of comparing the range of boiling points of different samples. It is not designed to separate fractions for detailed examination, and although used for this pur pose at times is not as satisfactory as other methods. It is used and recommended by the bureau for the testing of a variety of refined products including gasoline, naphtha, and kerosene, for which the temperature to be measured does not exceed about 320 C. (608 E). It could also be used for other products to measure distillation range up to some mark not in excess of 820 C., above which cracking is likely to occur. The present report describes the apparatus and methods used by the bureau for the routine distillation analysis of crude oil and lubricating oil and describes also apparatus developed for certain types of research. Some of the methods for studying the fractions separated are described, also for dehydrating emulsified oils, which is often a necessary preliminary to analytical distillation. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.