A Manual of Practical AssayingLongmans, Green, and Company, 1868 - 697 páginas |
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Página xvii
... Charcoal crucibles , 118. Lime crucibles , 121. Mr. David Forbes's experiments on crucibles , 121. Alumina crucibles , 122. Malleable iron crucibles , 123. Platinum crucibles , 123. Fresenius's directions for the preservation of ...
... Charcoal crucibles , 118. Lime crucibles , 121. Mr. David Forbes's experiments on crucibles , 121. Alumina crucibles , 122. Malleable iron crucibles , 123. Platinum crucibles , 123. Fresenius's directions for the preservation of ...
Página xviii
... charcoal , 155. The fat oils , 157. Tallow , 157. Resins , 157. Sugar , 157. Starch , 158. Gum , 158. Tartaric acid , 158. Oxalic acid , 158 . Oxalate of ammonia , 159. Comparative reducing power of the above agents , 159. Metallic iron ...
... charcoal , 155. The fat oils , 157. Tallow , 157. Resins , 157. Sugar , 157. Starch , 158. Gum , 158. Tartaric acid , 158. Oxalic acid , 158 . Oxalate of ammonia , 159. Comparative reducing power of the above agents , 159. Metallic iron ...
Página xix
... Charcoal , 203. Platinum , 204 . Fluxes and reagents , 205 . Reagents in the humid way Reagents used as simple solvents Distilled water , 205. Alcohol , 205. Ether , 205 . Reagents principally employed as chemical solvents ...
... Charcoal , 203. Platinum , 204 . Fluxes and reagents , 205 . Reagents in the humid way Reagents used as simple solvents Distilled water , 205. Alcohol , 205. Ether , 205 . Reagents principally employed as chemical solvents ...
Página 15
... charcoal for assays , it will also be found advantageous to ignite it , as hot charcoal is more readily pulverised than cold . In some instances the powder obtained in the iron or porcelain mortar is not fine enough ; recourse should ...
... charcoal for assays , it will also be found advantageous to ignite it , as hot charcoal is more readily pulverised than cold . In some instances the powder obtained in the iron or porcelain mortar is not fine enough ; recourse should ...
Página 39
... charcoal are employed in calcination ; for even if the substance be fusible it may generally be collected and weighed with- out loss , as very few bodies either penetrate into or adhere to a charcoal lining . In this way grey cobalt and ...
... charcoal are employed in calcination ; for even if the substance be fusible it may generally be collected and weighed with- out loss , as very few bodies either penetrate into or adhere to a charcoal lining . In this way grey cobalt and ...
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Palavras e frases frequentes
added alloy ammonia amount antimony aqua regia arsenic ascertained assay bismuth black flux blowpipe boiling borax button calcined carats carbonate of soda carbonic acid cent charcoal chloride of silver clay cobalt colour combustion containing cooling copper Crown 8vo crucible cubic cubic centimetres cupel decomposed dilute dissolved Edition employed excess filter flame flask fluid fuel furnace fused fusible fusion gives glass globule gold grains grammes heat hydrochloric acid ignited inches iron lime liquid litharge manganese matter melted mercury metal method mineral mixed mixture muffle nickel nitrate nitric acid normal solution obtained operation Ounce oxide oxide of lead oxidising oxygen permanganate peroxide pipette placed plate platinum potash potassium powder precipitate produced proportion protoxide pulverised pure readily reduced roasting salt silica slag small quantity sodium specific gravity substance sulphate of lead sulphide sulphuric acid temperature thousandths tion tube vessel washed weight Woodcuts zinc
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