Manual of chemical analysis as applied to the examination of medicinal chemicals : a guide for the determination of their identity and quality, and for the determination of their identity and quality, and for the detection of impurities and adulterations : for the use of pharmaceutists, physicians, druggists, and manufacturing chemists, and of pharmaceutical and medical students . Fig. 1. OPERATIONS. 17 tlie fluid by simply inclining the vessel and allowing the fluidto flow down a glass rod (Fig. 2), or by drawing it off by meansof a small glass siphon or a pipette (Fig. 3).. Tig. 2. In either
Manual of chemical analysis as applied to the examination of medicinal chemicals : a guide for the determination of their identity and quality, and for the determination of their identity and quality, and for the detection of impurities and adulterations : for the use of pharmaceutists, physicians, druggists, and manufacturing chemists, and of pharmaceutical and medical students . Fig. 1. OPERATIONS. 17 tlie fluid by simply inclining the vessel and allowing the fluidto flow down a glass rod (Fig. 2), or by drawing it off by meansof a small glass siphon or a pipette (Fig. 3).. Tig. 2. In either mode of separation the precipitate, in most in-stances, must be thoroughly freedfrom the menstruum by washingwith water, either on the filter orby decantation. In all cases and operationsof chemical examination, a economy with the sub-stance and the solutions is advis-able, so as to leave enough of theformer for unseen contingenciesand for confirmatory tests, asw^ell as to repeat or verify anyand all results of the examina-tion. All tests and reactionsare, therefore, performed on assmall a scale as is reasonable and appropriate in the particular case; and all operations shouldproceed accordingly, and with constant observance of the prin-eioles and processes w^hereon they depend.
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Keywords: ., bookcentury1, bookdecade1870, booksubjectpharmaceuticalchemistry
