A Treatise on Pharmacy for Students and PharmacistsLea Brothers, 1901 - 776 pages |
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Page 38
... means of a weight , to such a height that its tendency to reach its lowest position ( vertically below the centre of rotation ) almost neutralizes the total resistance . If , consequently , the tendency of the high centre of gravity and ...
... means of a weight , to such a height that its tendency to reach its lowest position ( vertically below the centre of rotation ) almost neutralizes the total resistance . If , consequently , the tendency of the high centre of gravity and ...
Page 53
... means of a delicate thermometer . A leaden collar is used to keep the bottles steady in the bath . Besides taking the specific gravity of liquids by means of a pycnometer , accurate results may also be obtained with the so - called ...
... means of a delicate thermometer . A leaden collar is used to keep the bottles steady in the bath . Besides taking the specific gravity of liquids by means of a pycnometer , accurate results may also be obtained with the so - called ...
Page 62
... means that the volume of water displaced by the hydrometer bears a ratio of 139.7 to the volume corresponding to 1 degree on the graduated scale ; but since the use of 139.7 as the modulus or constant would involve undesirable fractions ...
... means that the volume of water displaced by the hydrometer bears a ratio of 139.7 to the volume corresponding to 1 degree on the graduated scale ; but since the use of 139.7 as the modulus or constant would involve undesirable fractions ...
Page 64
... means of the small stirrup under the cup , so that the solid body may be placed underneath of the cup and thus be kept immersed . Solid bodies soluble in water must , of course , be tested in a liquid in which they are wholly insoluble ...
... means of the small stirrup under the cup , so that the solid body may be placed underneath of the cup and thus be kept immersed . Solid bodies soluble in water must , of course , be tested in a liquid in which they are wholly insoluble ...
Page 65
... preventing the hydrometer from adhering to its sides , by means of the pecu- liar indentations . Special instruments have been devised for taking the specific gravity of very small quantities of liquids , namely ,. 5 SPECIFIC GRAVITY . 65.
... preventing the hydrometer from adhering to its sides , by means of the pecu- liar indentations . Special instruments have been devised for taking the specific gravity of very small quantities of liquids , namely ,. 5 SPECIFIC GRAVITY . 65.
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Common terms and phrases
acacia acetic acid added alkali alkaloids ammonia ammonia-water ammonium anhydrous arsenic bicarbonate bismuth boiling bottles bromide calcium cent chemical chloride chloroform Cloth color compound condenser containing crystals decomposition dioxide dissolved distilled water dried drug employed emulsion ether evaporation fats ferric ferrous filter filtration fixed oils flask fluid extract fluidounces gelatin glass glycerin grains heat hence hydrochloric acid hydroxide insoluble iodide iodine iron known latter liquid mass medicinal menstruum mercuric metallic mixed mixture mucilage neutral nitrate nitric acid obtained octavo volume odor official ointment oxide percolation pharmacists Pharmacopoeia phosphate pills plates potassa potassium potassium carbonate potassium iodide powder precipitated preparation present quinine reaction readily removed residue resin salicylate salt silver nitrate sodium carbonate soluble solvent specific gravity starch substances sugar sulphate sulphuric acid syrup tablets temperature tincture tion triturated tube vessel volatile oils washed water of crystallization water-bath weight yield zinc
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Page 68 - ... the ratio of the ovendry weight of a sample to the weight of a volume of water equal to the volume of the sample at some specific moisture content, as green, air-dry, or ovendry.