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. 6. REAGENTS. 23 provided with a stop-cock, or with a rubber tube, closed by a Mohrs wire clamp {see p. 56). The acid is poured in through the safety-tube, runs into the bottom globe, and rises to overflow the fe
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. 6. REAGENTS. 23 provided with a stop-cock, or with a rubber tube, closed by a Mohrs wire clamp {see p. 56). The acid is poured in through the safety-tube, runs into the bottom globe, and rises to overflow the ferrous sulphide in the middle one. When the air has been allowed to escape through the delivery-tube, and this is closed, the pressure of the accumulating hydrogen sulphide forces the liquid from the second bulb down into the lower, and thence into the upper bulb, thus stopping the action, and preserving a volume of the gas ready for use. When no such apparatus is at hand, hydro-sulphuric-acid gas may be generated, in smalltests, from a little flask or a test-tube (), taking care that none of the contents of the flask passthrough the delivery-tube into the liquid under examination. Hydrosulphuric Acid.—A solution of hydrosulphuric-acidgas (sulphuretted hydrogen) in water, saturated at 15° C, or. Fig. 7.
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Keywords: ., bookcentury1, bookdecade1870, booksubjectpharmaceuticalchemistry
