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Page 17
... mixture of alcohol and water of the same specific gravity as the sample is prepared in the fol- lowing manner : Separate portions of distilled water and 95 per cent . alcohol are boiled for 10 minutes . The water is poured , while still ...
... mixture of alcohol and water of the same specific gravity as the sample is prepared in the fol- lowing manner : Separate portions of distilled water and 95 per cent . alcohol are boiled for 10 minutes . The water is poured , while still ...
Page 18
... mixture will contain air- bubbles and be unfit for use . The apparatus ( Fig . 9 ) consists of : A thermometer reading easily and accurately to tenths of a degree ; a cathetometer for reading the thermometer ( this may be substituted by ...
... mixture will contain air- bubbles and be unfit for use . The apparatus ( Fig . 9 ) consists of : A thermometer reading easily and accurately to tenths of a degree ; a cathetometer for reading the thermometer ( this may be substituted by ...
Page 19
... mixture in the vicinity of the disk , the thermom- eter is used as a stirrer . The disk having been placed in posi- tion , the water in the beaker is slowly heated and kept con- stantly stirred by means of the blowing apparatus already ...
... mixture in the vicinity of the disk , the thermom- eter is used as a stirrer . The disk having been placed in posi- tion , the water in the beaker is slowly heated and kept con- stantly stirred by means of the blowing apparatus already ...
Page 28
Henry Leffmann, William Beam. solid sodium compound . A fused mixture of sodium chlorid and phosphate is better than sodium chlorid alone . The fol- lowing is an excellent method for obtaining a steady , strong , yellow light : Strips of ...
Henry Leffmann, William Beam. solid sodium compound . A fused mixture of sodium chlorid and phosphate is better than sodium chlorid alone . The fol- lowing is an excellent method for obtaining a steady , strong , yellow light : Strips of ...
Page 45
... frequently during ten minutes ; 5 grams of sodium thiosulfate are added and 10 grams of potassium sul- fate . The mixture is heated very gently until frothing ceases , and then according to the usual method . The ammonia NITROGEN 45.
... frequently during ten minutes ; 5 grams of sodium thiosulfate are added and 10 grams of potassium sul- fate . The mixture is heated very gently until frothing ceases , and then according to the usual method . The ammonia NITROGEN 45.
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Common terms and phrases
2d Edition A. H. Allen acetic acid added adulteration alcohol alkaline ammonium hydroxid amount analysis apparatus Arachis arachis oil beaker blue boiling bottle butter c.c. flask c.c. of water caffein calcium carbonate cent cheese chloric acid chlorid chloroform coffee color condenser containing cooled copper cottonseed oil detected determined dilute dish dissolved distilled dried drop ether evaporated examination extract fatty acids fermentation fiber figure filtered filtrate flour fusel oil glucose glycerol grams heated hilum hydrochloric acid Illustrations insoluble invert-sugar iodin lactose lard liquid material method methyl microscope milk minutes mixed mixture nitrate nitric acid nitrogen obtained oxid pepper platinum portion potassium powder precipitate present proportion proteids pure quantity residue sample shaken sirup sodium carbonate sodium hydroxid soluble solution specific gravity starch sucrose sugar sulfate sulfuric acid temperature test-tube thermometer tion total solids tube usually vinegar washed weighed wine yellow zinc