Conservation by sanitation; air and water supply, disposal of waste, including a laboratory guide for sanitary engineers . View of Electrically Equipped Experiment Table in Water Laboratory. Electric Flask Heater in use in Laboratory tor Water Analysis LABORATORY EXERCISES 283 streams a knowledge of odors and of behavior of decomposingsubstances is of advantage. The peculiar odor of imperfectfiltration, for instance, is a quicker and just as sure a test as achemical one. A skillful laboratory operator combines something of a busi-ness administrator, quick to seize an opportunity, combined with
Conservation by sanitation; air and water supply, disposal of waste, including a laboratory guide for sanitary engineers . View of Electrically Equipped Experiment Table in Water Laboratory. Electric Flask Heater in use in Laboratory tor Water Analysis LABORATORY EXERCISES 283 streams a knowledge of odors and of behavior of decomposingsubstances is of advantage. The peculiar odor of imperfectfiltration, for instance, is a quicker and just as sure a test as achemical one. A skillful laboratory operator combines something of a busi-ness administrator, quick to seize an opportunity, combined withconcentration of thought, something of a detective, watchful ofany indication of the unusual, with the rapidity of working of atrained manipulator. The right test is to be made at the righttime, not only to secure the right result but also to fit in best withthe days work. For instance, if the operator waits until noon todecide whether the sample must be concentrated, the whole dayis lost, unless he works in the evening, so far as finishing theanalysis is concerned. The half-evaporated sample must notbe left exposed all night in the cleanest laboratory. All opera-tions which require
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Keywords: ., bookcentury1900, bookdecade1910, booki, bookpublishernewyorkwiley
