A new record form for qualitative analysis

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A NEW RECORD FORM FOR QUALITATIVE ANALYSIS W. A. MANUEL

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Ohio Wesleyan University, Delaware, Ohio

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A S T U D E N T in qualitative analysis usually records his results in a series of equations or in the form of a chart similar to that used-in the text as a tabnlated set of directions for group analysis. The equation method emphasizes the mechanics of equation writing more than i t emphasizes the recording and interpretation of the phenomena observed. The chart form may require the recording of observed results together with their interpretation, but has the disadvantage of being unsuitable for printing as a standardized blank form for general use with all groups. The record form reproduced herewith is free from these objections, and has been used in the author's classes for several years. It is printed and distributed to the students for use in connection with all groups of the ordinary scheme of qualitative analysis. It will be noted from the directions a t the top of the form and from the notes which have been added by the student in recording the step-by-step analysis of an unknown for G r o u ~I. that this blank ~rovidesmace for brief descriptions ofthe materials andresults of each significant procedure and that it requires the listing of the reagents and processes employed. Its graphic character helps the student avoid confusing his various precipitates and iiltrates; and i t helps the laboratory instructor, not only . by . enabling him to recognize quickly the exact place in the &lytical scheme a t which a student may be working, but it also frequently enables the instructor, in checking an erroneous analysis, to find the exact step a t which the student deviated from the standard procedure. This blank form is suitable for the preliminary analy-

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sis of a "known" as well as for the analysis of an "unknown." It is our custom to insist that the record be made out by the student as the analysis proceeds and that i t be handed in a t the end of the analysis. These reports are graded promptly and returned to the student, to become a part of his notebook.