Public health laboratory work, including methods employed in bacteriological research, with special reference to the examination of air, water and food contributedBlakiston, 1893 - 491 pages |
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Page 33
... solution of methyl- orange ; decinormal hydrochloric acid is then run in from a graduated burette until the appearance of a red tint denotes that the neutral stage has just been reached . The estimation is made in terms of calcium ...
... solution of methyl- orange ; decinormal hydrochloric acid is then run in from a graduated burette until the appearance of a red tint denotes that the neutral stage has just been reached . The estimation is made in terms of calcium ...
Page 39
... solution used , is of course the same as that exist- ing in the solution under analysis . APPARATUS Required . 1. A condensing apparatus . 2. A boiling flask or retort , most conveniently of about a litre capacity . This must be ...
... solution used , is of course the same as that exist- ing in the solution under analysis . APPARATUS Required . 1. A condensing apparatus . 2. A boiling flask or retort , most conveniently of about a litre capacity . This must be ...
Page 41
... solution of chloride of ammonium , made to the strength that I c.c. contains o'or milli- gramme of ammonia . 2. Nessler's reagent . This consists of a solution of potassium iodide and the periodide of mercury in dis- tilled ammonia free ...
... solution of chloride of ammonium , made to the strength that I c.c. contains o'or milli- gramme of ammonia . 2. Nessler's reagent . This consists of a solution of potassium iodide and the periodide of mercury in dis- tilled ammonia free ...
Page 42
... solution of corrosive sublimate . Any precipitate of the red mercuric iodide which settles should not be disturbed when the reagent is being used . 3. A strongly alkaline solution of the permanganate of potassium which has been boiled ...
... solution of corrosive sublimate . Any precipitate of the red mercuric iodide which settles should not be disturbed when the reagent is being used . 3. A strongly alkaline solution of the permanganate of potassium which has been boiled ...
Page 44
... solution of ammonia of known strength , ( ie . , the standard solution of the chloride of ammonium ) , has to be added to this water to match the amount of coloration in each of the three Nessler glasses . The amount of ammonia thus ...
... solution of ammonia of known strength , ( ie . , the standard solution of the chloride of ammonium ) , has to be added to this water to match the amount of coloration in each of the three Nessler glasses . The amount of ammonia thus ...
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Common terms and phrases
acetic added adulteration alcohol alkaline alum ammonia ammonium sulphide amount analysis animal apparatus appearance atmosphere blue boiling bottle burette butter c.c. of water calcium calcium carbonate carbonic acid cells cent chemical chlorine coal gas collected colour contain copper created cubic cubic centimetres detected dilute dissolved distilled water employed estimation evaporation flask flour gases gelatine grammes granules hydrochloric acid insoluble iron lime liquid liquor potassæ litre magnesium meat method micro-organisms milk milligramme mineral necessary Nessler glass nitrates and nitrites nitrogen nitrous acid odour organic matter oxide oxidised oxygen permanganate placed platinum dish poisonous metals pollution potassium precipitate present pure quantities reaction reagent residue salts sample sediment silica silver nitrate smell sodium carbonate soil soluble specific gravity standard solution starch sterilised substance sugar sulphate sulphuretted hydrogen sulphuric acid temperature tion total solids tube vapour vegetable washed weight yellow zinc
Popular passages
Page 417 - ... that he had no reason to believe at the time when he sold it that the article was otherwise, and that he sold it in the same state as when he purchased it, he shull be discharged from the prosecution, but shall be liable to pay the costs incurred by the prosecutor, unless he shall have given due notice to him that he will rely on the above defence.
Page 341 - ... diseased, or unsound, or unwholesome, or unfit for the food of man, he may seize and carry away the same himself or by an assistant, in order to have the same dealt with by a justice.
Page 495 - The Diseases of Women. Including Diseases of the Bladder and Urethra. By DR. F. WINCKEL, Professor of Gynaecology and Director of the Royal University Clinic for Women, in Munich.
Page 495 - English Edition, revised and improved. 758 pages. This volume was specially prepared to furnish students with a new text-book of Physiology, elementary so far as to avoid theories which have not borne the test of time and such details of methods as are unnecessary for students in our medical colleges.