The Assayer's Manual: An Abridged Treatise on the Docimastic Examination of Ores, and Furnace and Other Artificial Products |
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Page 23
... grammes ( 23.15 grains ) from those of gold ) is cut from the upper and lower sides on opposite ends of the ingot by ... gramme , 7.71 to 15.43 grains , of each is weighed off for the purpose ) . The yield is calculated , and either the ...
... grammes ( 23.15 grains ) from those of gold ) is cut from the upper and lower sides on opposite ends of the ingot by ... gramme , 7.71 to 15.43 grains , of each is weighed off for the purpose ) . The yield is calculated , and either the ...
Page 25
... grammes or 1157.87 grains ) . The weighed portion is heated in an iron or copper pan or directly in the removable scale - pan of the balance , by holding it over a heated stove or a bra- zier of charcoal , and constantly stirring it ...
... grammes or 1157.87 grains ) . The weighed portion is heated in an iron or copper pan or directly in the removable scale - pan of the balance , by holding it over a heated stove or a bra- zier of charcoal , and constantly stirring it ...
Page 70
... grammes ( 1.05 to 1.76 ounces ) , and , with 5 grammes ( 77.19 grains ) in each pan , must be distinctly sensitive to an addition of 1 milligramme ( 0.015 grain ) . 2. Bullion or button balance , inclosed in a case , for weighing gold ...
... grammes ( 1.05 to 1.76 ounces ) , and , with 5 grammes ( 77.19 grains ) in each pan , must be distinctly sensitive to an addition of 1 milligramme ( 0.015 grain ) . 2. Bullion or button balance , inclosed in a case , for weighing gold ...
Page 71
... gramme ( 15.43 grains ) = 1000 parts to bo part ; for assays of gold from gramme ( 7.71 grains ) as the unit = 1000 parts to part . - 2. Centner . - 1 assay centner 5 grammes ( 77.19 grains ) ( Upper Harz ) or = 3.75 grammes ( 57.89 ...
... gramme ( 15.43 grains ) = 1000 parts to bo part ; for assays of gold from gramme ( 7.71 grains ) as the unit = 1000 parts to part . - 2. Centner . - 1 assay centner 5 grammes ( 77.19 grains ) ( Upper Harz ) or = 3.75 grammes ( 57.89 ...
Page 77
... grammes ( 15.43 to 30.87 grains ) of the reagent with 60 grammes ( REAGENTS FOR DRY ASSAYS . 77 Estimation of the Reducing Power.
... grammes ( 15.43 to 30.87 grains ) of the reagent with 60 grammes ( REAGENTS FOR DRY ASSAYS . 77 Estimation of the Reducing Power.
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Common terms and phrases
2.5 grammes 20 grammes added alloy ammonia ammonium antimony aqua regia argol arsenic assay sample beaker-glass bismuth black copper black flux boiled borax burette cent charcoal charge chloride coal cobalt color common salt containing copper covering of common crucible crucible Fig cubic centimeters cubic inches cupelled decanted decomposed determined diluted Dingler dried evaporated to dryness ferric oxide ferrous filtered filtrate flask fluid foreign metals Fresenius furnace fused fusion glass gold gramme 15.43 grains gramme 7.71 grains grammes 154.32 grains grammes 77.16 grains granulated lead heated hydrate hydrochloric acid ignited iron lead button liquid litharge mercury metallic sulphides meters method millimeters mixed mixture muffle muffle-furnace nickel nitric acid percentage placed platinum porcelain potassium carbonate potassium cyanide poured powdered precipitated pyrites refractory residue scorifier slag smelting sodium carbonate sodium sulphide substances sulphate sulphuretted hydrogen sulphuric acid temperature titrated tube u. h. Ztg volumetric washed weighed zinc Ztschr
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