The Analyst, Volumer 14-15Royal Society of Chemistry, 1889 International journal concerned with the development and application of analytical and bioanalytical techniques. Covers all aspects of the theory and practice of analytical science, both fundamental and applied, including bioanalysis (including biospecific assays), chromatography and electrophoresis, mass spectrometry, electrochemistry, sensors, imaging techniques, sampling and sample handling, chemometrics/statistics, atomic and molecular spectroscopy and all other areas related to measurement science. |
Inni boken
Resultat 1-5 av 86
Side 8
... colour becomes permanent . During the first part of the titration the solution remains quite clear , but subsequently a white precipi- tate of oxalate of barium is produced , and this forms an extremely delicate background for viewing ...
... colour becomes permanent . During the first part of the titration the solution remains quite clear , but subsequently a white precipi- tate of oxalate of barium is produced , and this forms an extremely delicate background for viewing ...
Side 26
... colour . No reliance can , of course , be placed on results obtained by titrating with either hydrate or car- bonate of sodium in the presence of mineral acids , but in their absence neutralisation with alkali gives a fairly accurate ...
... colour . No reliance can , of course , be placed on results obtained by titrating with either hydrate or car- bonate of sodium in the presence of mineral acids , but in their absence neutralisation with alkali gives a fairly accurate ...
Side 27
... colour appears . In order to avoid any possible chance of error , I always perform the entire process in duplicate . Two determinations of the total acidity should agree within two grains of normal soda solution . The results are ...
... colour appears . In order to avoid any possible chance of error , I always perform the entire process in duplicate . Two determinations of the total acidity should agree within two grains of normal soda solution . The results are ...
Side 29
... colour could be seen ; but in the case of very dark juices it sometimes became necessary to have an outside indicator , in which case very delicate litmus - paper , made by brushing a neutral solution of litmus on to white writing ...
... colour could be seen ; but in the case of very dark juices it sometimes became necessary to have an outside indicator , in which case very delicate litmus - paper , made by brushing a neutral solution of litmus on to white writing ...
Side 31
... colour , while the fat is set free and rises to the surface . The ether dissolves this fat , but I think not entirely . There is always a minute amount of fat present in the hydrochloric acid solution . whether this is a constant ...
... colour , while the fat is set free and rises to the surface . The ether dissolves this fat , but I think not entirely . There is always a minute amount of fat present in the hydrochloric acid solution . whether this is a constant ...
Andre utgaver - Vis alle
Vanlige uttrykk og setninger
acetic acid added adulteration albumen alcohol alkaline Allen alumina ammonia ammonium amount amylic alcohol apparatus arsenic barium beer boiling boracic acid bottle butter butter-fat cadmium carbonate carbonic acid caustic cent Chem chemical chemists chloride chloroform colouring matter containing copper cream detection determination dilute dissolved distillation Estcourt ESTIMATION ether evaporated excess experiments extract fatty acids filtered filtrate flask fluid fusel give grammes grams grms heat Hehner hydrochloric acid hydrogen insoluble iodine laboratory lard lime liquid litre method milk mixed mixture nitric acid nitrogen obtained oxide paper phosphate potash potassium powder precipitate present produced public analysts pure quantity reagent residue salicylic acid salts sample saponification silica soap SOCIETY OF PUBLIC soda soda-lime sodium soluble solution specific gravity starch substance sugar sulphate sulphide sulphuric acid taken temperature titrated tube Vieth volatile acids washed weight Westphal balance yeast
Populære avsnitt
Side 223 - No person shall mix, colour, stain, or powder, or order or permit any other person to mix, colour, stain, or powder any article of food with any ingredient or material so as to render the article injurious to health...
Side 53 - No person shall, with the intent that the same may be sold in its altered state without notice, abstract from an article of food any part of it so as to affect injuriously its quality, substance, or nature...
Side 53 - ... 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 shall 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.
Side 220 - ... (1) Where any matter or ingredient not injurious to health has been added to the food or drug because the same is required for the production or preparation thereof as an article of commerce, in a state fit for carriage or consumption and not fraudulently to increase the bulk, weight, or measure of the food or drug, or conceal the inferior quality thereof...
Side 53 - If the defendant in any prosecution under this Act prove to the satisfaction of the justices or court that he had purchased the article in question as the same iu nature, substance, and quality as that demanded of him by the prosecutor, and with a written warranty to that effect...
Side 223 - Under this section it is in violation of the sale of food and drugs act to " sell to the prejudice of the purchaser any article of food or any drug which is not of the nature, substance, and quality of the article demanded.
Side 54 - Viet c. 63), for havicg sold to the prejudice of the purchaser a certain article of food, to wit, beer, which was not of the nature, substance, and quality of the article demanded by the purchaser.
Side 23 - C. for one hour, filter, and wash with ammonium nitrate solution. (Test the filtrate by renewed digestion and addition of more molybdic solution.) Dissolve the precipitate on the filter with ammonia and hot water and wash into a beaker to a bulk of not more than 100 cc.
Side 219 - A brewer of beer for sale shall not adulterate beer, or add any matter or thing thereto (except finings for the purpose of clarification, or other matter or thing sanctioned by the Commissioners of Inland Revenue), before the same is delivered for consumption, and any beer found to be adulterated, or mixed with any other matter or thing (except as aforesaid), in the possession of a brewer of beer for sale shall be forfeited, and the brewer shall incur a fine of fifty pounds.
Side 45 - A convenient amount of the alcohol to be purified is shaken with pulverized potassium permanganate until it a'ssumes a decided color. It is then allowed to stand for some hours, until the permanganate has been decomposed and brown manganese oxide is deposited. A pinch of pulverized calcium carbonate is then added, and the alcohol distilled at the rate of about...