. Essentials of medical and clinical chemistry. With laboratory exercises . Sediment from a urine in the alkaline fermentation. {a) Ammonium urate; (b) ammo-nio-magnesium phosphate; (c) bacterium ureae. development of bacteria. Pus and blood or vessels tainted withurine previously fermented greatly hasten this change. The re-action is recognized by litmus paper. If acid, the blue litmus is13 i86 ESSENTIALS OF CHEMISTRY. turned red; if alkaline, the red litmus is turned blue; if neutralthere is no change in either. If alkalinity be due to ammonia(volatile alkali) the blued paper gets red again
. Essentials of medical and clinical chemistry. With laboratory exercises . Sediment from a urine in the alkaline fermentation. {a) Ammonium urate; (b) ammo-nio-magnesium phosphate; (c) bacterium ureae. development of bacteria. Pus and blood or vessels tainted withurine previously fermented greatly hasten this change. The re-action is recognized by litmus paper. If acid, the blue litmus is13 i86 ESSENTIALS OF CHEMISTRY. turned red; if alkaline, the red litmus is turned blue; if neutralthere is no change in either. If alkalinity be due to ammonia(volatile alkali) the blued paper gets red again on drying. Specific Gravity.—Though the average specific gravity is 1020,it exhibits, even in health, great variations, the extremes being1002 after copious use of water and diuretics, and 1040 after ab-stinence from fluid and the elimination of water through othermeans, as profuse perspiration or copious diarrhoea. The amountof solids varying but little in health, fluctuations in specific gravityare due mainly to variations in the amount of water; so, as longas the in
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