Excerpt from Laboratory Exercises in Applied Chemistry
Although technical analysis has long been included in the curricula of technical colleges, a textbook devoted solely to this subject is still lacking. Laboratory manuals and the like generally contain little more than mere descriptions of technical methods of analysis, and explanations of the underlying chemical principles or of their applications are seldom attempted. It is evident that such books can be of very little help to students. The mechanism of the reactions involved in analytical methods is by no means so clear that explanation is unnecessary, since a student usually begins technical analysis at a comparatively early stage in his course. Neither can it be assumed that the student has sufficient knowledge of the practical side of the subject to enable him to grasp the full significance of the analysis in which he is engaged. Only when the analyst understands what part the raw material under examination is destined to play in subsequent industrial operations, how a manufactured product has reached its final condition and for what purpose it is to be used, is he in a position to appreciate the importance of the various determinations, or the consequences that might ensue from a faulty analysis. The author, as lecturer in the Darmstadt Technical School, knows from his long experience that it is just the emphasis laid upon the technical application of an analysis which deepens the student's knowledge and understanding of chemical processes. Interest is stimulated in the analysis itself, which is thus saved from being regarded merely as an unnecessary extension of ordinary quantitative analysis.
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