Technical Chemists' Handbook: Tables and Methods of Analysis for Manufactures of Inorganic Chemical Products (Classic Reprint) - Tapa dura

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Excerpt from Technical Chemists' Handbook: Tables and Methods of Analysis for Manufactures of Inorganic Chemical Products

The aim of The Technical Chemists Handbook is to effect, as far as possible, the task of establishing uniformity among practical chemists, buyers and sellers, and analysts, in regard to both the numerical data employed in their work and the analytical methods used for the control of processes, and for the testing of the resulting products.

In the preparation of this new edition, all the analytical factors have been recalculated on the basis of the atomic weights published by the International Committee for 1916. This has involved in exceedingly numerous cases changes of the data contained in the last edition, some of them of importance even for merely practical purposes. The tables of specific gravities and other tables have been selected from among the most recent and reliable determinations.

In regard to the analytical methods, they are again chosen as before, on the principle that, as a rule, only one method should be given for each analytical operation, as well as for the preparation of standard solutions and for sampling the materials, in order to avoid discrepancies such as might arise should two or more methods be described. The method chosen should always, of course, be that which permits the greatest degree of accuracy possible that can be attained in a well-appointed works laboratory by a properly trained chemist. In cases where there is a choice between equally accurate methods, that occupying least time or least apparatus, or which is already widely known and employed, has been preferred.

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