| 单词 | litmus paper |
| 例句 | The best way to confirm that the solution is neutralized is with litmus paper. Your rust removal questions and my answers 2022-11-07T05:00:00Z Watson recalls one telling advertising campaign: posters printed on litmus paper that said: “When acid rain is falling, you should see red” – offering a vivid illustration of the problem. 'We've had so many wins': why the green movement can overcome climate crisis 2020-10-12T04:00:00Z For the average home gardener, I usually recommend a litmus paper kit and sending a soil sample to a lab. Boost your pH IQ, and then test — and amend — your soil 2019-11-09T05:00:00Z “I think this is a litmus paper to understand how nervous Hamas is,” said retired Israeli Col. Gazans have paid in blood for a year of protests. Now many wonder what it was for. 2019-03-28T04:00:00Z CAM devices, of course, are also more sophisticated than litmus paper, detecting and discriminating between, for example, vapors of nerve and blister agents and displaying their relative concentration. Shocking Pink: An Inexpensive Test for Chemical Weapon Attacks 2012-03-15T11:15:00.267Z This can be ascertained by the use of blue litmus paper, which when dipped into the water will betray the presence of the acid by turning red. Magic In which are given clear and concise explanations of all the well-known illusions as well as many new ones. 2011-07-10T02:00:22.253Z Her effect upon blue litmus paper would assuredly have been most striking and instantaneous. A Woman's Burden 2011-02-13T03:00:21.253Z Sleep is just a litmus paper to physical and mental health. Lack of sleep 'poses death risk' 2010-05-04T23:11:00Z The operator under such conditions first adds the sulfate of alumina, then the acid, using litmus paper as his indicator. Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. On this occasion the smoke from the craters did not apparently contain much acids, for no bad smell was perceptible, and the water in which I washed the ashes scarcely reddened litmus paper. The Eruption of Vesuvius in 1872 Dip a piece of blue litmus paper into the solution, and if it does not turn the paper red add a little more of the gold solution until it does. Harper's Round Table, August 20, 1895 When the milk is quite fresh it will, owing to its amphoteric condition, change the red litmus paper slightly blue, and the blue litmus paper slightly red. The Bacillus of Long Life a manual of the preparation and souring of milk for dietary purposes, together with and historical account of the use of fermente Under its influence the urine becomes copious, the muddy brickdust deposit disappears, and the normal specific gravity and action upon litmus paper is restored. Buxton and its Medicinal Waters The chemical reaction is alkaline, turning red litmus paper blue. Special Report on Diseases of Cattle But if you put a piece of litmus paper into something that is neither an acid nor a base, like sugar or salt, it will still stay the same color. Common Science Then add enough of the bicarbonate of soda solution till it turns the litmus paper back to blue. Harper's Round Table, August 20, 1895 If alkaline, the milk will deepen the blue colour of litmus paper, which is to be had of any chemist; if acid, it will discharge the colour and turn it red. The Mother's Manual of Children's Diseases Add 100 cc. of recently boiled water to the sample, place a sufficient quantity of recently boiled water in the outer flask and distil until the distillate is no longer acid to litmus paper. All About Coffee The Outfit contains over 20 different articles, including chemicals, test-tubes, adjustable ring-stand, litmus paper, filter paper, glass tubing, etc.; in fact, everything needed for the forty-one experiments. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity Dip your litmus paper first into one, then into the other, and then back into the first. Common Science If it is strongly alkaline, i. e., turning red litmus paper blue, it is pretty certain that something in the way of a preservative has been added to it. The Home Medical Library, Volume V (of VI) Neutralise carefully to litmus paper by the successive additions of small quantities of normal soda solution. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. With water it forms a mucilage as adhesive as gum arabic, and this solution reddens litmus paper. The Medicinal Plants of the Philippines A piece of blue litmus paper will be convenient to prove that the mixture is alkaline. Ontario Teachers' Manuals: Nature Study With pink and blue litmus paper, test the different substances named below to see which are acids and which are bases. Common Science If not, apply the litmus paper to the wetted ink, and the presence of acid will be shown in the usual way by the litmus paper changing colour. The Detection of Forgery A Practical Handbook for the Use of Bankers, Solicitors, Magistrates' Clerks, and All Handling Suspected Documents Render the reaction of the medium neutral to litmus paper by the cautious addition of normal caustic soda. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. A method of testing soils for acidity, which has been in use for many years, is the simple litmus paper method. Right Use of Lime in Soil Improvement If the mixture turns the litmus paper red, it must have more lime-water added to make it alkaline. Ontario Teachers' Manuals: Nature Study You may take two pieces of litmus paper home with you and test anything else that you may care to. Common Science A package of blue litmus paper can be bought for a few cents at any drug store. Crops and Methods for Soil Improvement Neutralise carefully to litmus paper by the successive additions of small quantities of decinormal soda solution. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. Because of its simplicity and fair degree of accuracy, the litmus paper test is still used to a considerable extent in estimating the degree of acidity of certain soils. Right Use of Lime in Soil Improvement It responds to these much as blue litmus paper turns red when a weak acid is dropped on it, or as lemonade fizzes when you put soda in it. Preventable Diseases When you tested a number of substances with litmus paper to find out which of them were acids, you were really doing some work in chemical analysis. Common Science The Litmus-paper Test.—A test of fair reliability may be made with litmus paper. Crops and Methods for Soil Improvement Add normal caustic soda solution in successive small quantities, and test the reaction from time to time with litmus paper, until the fluid reacts faintly alkaline. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. The acid should be run in slowly, and the point when enough has been added, is indicated by blue litmus paper being slightly reddened by the lyes. The Handbook of Soap Manufacture Did you test the distilled water with litmus paper? Lessons on Soil Chemists actually use litmus paper in this way to find out whether a substance is an acid or a base. Common Science Several sheets of the blue litmus paper should be buried in the mud, care being used that the hands are clean and dry. Crops and Methods for Soil Improvement So long as the ends of the blue litmus paper become more or less reddened, the acids have not been completely saturated. The Cultivation of The Native Grape, and Manufacture of American Wines Perfectly dry ammonia does not affect litmus paper. An Elementary Study of Chemistry Like mother's milk, the cow's milk is neutral as it comes from the udder; but, on standing, it quickly changes, soon becoming slightly acid, as shown by testing with blue litmus paper. The Mother and Her Child So, to test for a base, use a piece of litmus paper that is pink and see if it turns blue, or if you want to test for an acid, use blue litmus paper. Common Science Buy a pennyworth of blue litmus paper from a drug store. Agriculture for Beginners Revised Edition Until the eye has learned by practice to recognize the points of saturation by the tone of color, it can be proven by means of litmus paper. The Cultivation of The Native Grape, and Manufacture of American Wines Posthypnotic suggestion, crystal-gazing, automatic writing and trance-speech, the willing-game, etc., are now, thanks to him, instruments of research, reagents like litmus paper or the galvanometer, for revealing what would otherwise be hidden. Memories and Studies In fact, what is known as ordinarily fresh milk, if subjected to the litmus paper test, always gives an acid reaction. The Mother and Her Child Lay a piece of litmus paper in the bottom of the dish. Common Science Mix some of the suspected soil with a little water and bury the litmus paper in the mixture. Agriculture for Beginners Revised Edition To the bath so prepared just enough ammonia should be added to make it alkaline, a condition that may be ascertained by using a red litmus paper, which must just turn blue. The Dyeing of Woollen Fabrics First hold in the escaping gases a wet strip of red litmus paper. Physiology and Hygiene for Secondary Schools Insert a piece of litmus paper and cautiously neutralise with nitric acid, using ammonia to neutralise any accidental excess of the acid. A Text-book of Assaying: For the Use of Those Connected with Mines. When the litmus paper begins to turn blue, add the dilute caustic soda drop by drop until the litmus paper stays blue when you stir the mixture. Common Science If nitrogen is present it will take up hydrogen in the decomposition ensuing, and escape as ammonia, which will turn the red litmus paper blue. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association This bath should be alkaline, and you can test it with red litmus paper. Golden Days for Boys and Girls, Vol. XII, Jan. 3, 1891 Hold, for a minute or longer, a narrow strip of red litmus paper in the mouth, noting any change in the color of the paper. Physiology and Hygiene for Secondary Schools The oxide is a green powder, readily and completely soluble in hydrochloric acid, and without action on litmus paper. A Text-book of Assaying: For the Use of Those Connected with Mines. Sufficient milk of lime is added here to nearly or quite neutralize the acids in the juice, the test being made with litmus paper. Scientific American Supplement, No. 633, February 18, 1888 With the cotton, however, no ammonia escapes, no turning of the piece of red litmus paper blue is observed, and so no nitrogen can be present in the cotton fibre. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association Hence, in order to detect the presence of acid in a substance, one has merely to put some of the substance on blue litmus paper, and note whether or not the latter changes color. General Science Hold a piece of red litmus paper in the soda solution, noting that it is turned blue. Physiology and Hygiene for Secondary Schools For ordinary purposes it is best used as litmus paper, which may be purchased in small books. A Text-book of Assaying: For the Use of Those Connected with Mines. It dries under exposure to air in small scales, is soluble in water but not in alcohol, slightly reddens litmus paper, and long retains its noxious properties. Scientific American Supplement, No. 421, January 26, 1884 First, I will heat strongly some cotton with a little soda-lime in a tube, and hold a piece of moistened red litmus paper over the mouth of the tube. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association If now red litmus paper is tested in the same solution, its color also will remain unchanged; such a result indicates infallibly the absence of any basic quality. General Science Then hold a piece of blue litmus paper in the acid solution, noting that it is turned red. Physiology and Hygiene for Secondary Schools Stir up with 30 or 40 c.c. of water, float a piece of litmus paper on the liquid and titrate with the standard solution of acid. A Text-book of Assaying: For the Use of Those Connected with Mines. Carbonate of baryta loses its carbonic acid at a red heat, becomes caustic, and colors red litmus paper blue. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations If the acid is exactly neutralised by, that is combined with, the alkaline base to form fully neutralised salts, the litmus paper takes a purple tint. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association The water in the tanks should be every now and again renewed, and after the first few boilings the water should be tested with litmus paper until they are no longer found to be acid. Nitro-Explosives: A Practical Treatise Add acid to the soda solution, and soda to the acid solution, until the conditions are reversed, testing with the red and blue litmus papers. Physiology and Hygiene for Secondary Schools Dilute with 20 or 30 c.c. of water; put in a piece of litmus paper; and add dilute ammonia until just alkaline. A Text-book of Assaying: For the Use of Those Connected with Mines. This can be easily done by moistening the litmus paper, and then inserting the end of it in the tube. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Set aside a little of the solution, and to the residue add ammonia, little by little, stirring between additions, until the mixture is alkaline to litmus paper. Scientific American Supplement No. 822, October 3, 1891 The interval in each case between the points was about half an inch; the positive point p was opposite the litmus paper; the negative point n opposite the turmeric. Experimental Researches in Electricity, Volume 1 Test for Earthy Matters or Alkali in Water.—Take litmus paper dipped in vinegar, and if, on immersion, the paper returns to its true shade, the water does not contain earthy matter or alkali. Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889 The ammonia is recognised by its odour, by its alkaline reaction with litmus paper, and by yielding white fumes, when brought in contact with fuming acid. A Text-book of Assaying: For the Use of Those Connected with Mines. The alkalies, in their pure, or carbonated state, render reddened litmus paper blue. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Then drop in additions of the portion left aside, until the mixture is just acid to litmus paper. Scientific American Supplement No. 822, October 3, 1891 A piece of litmus paper moistened in solution of common salt or sulphate of soda, was quickly reddened at p. Experimental Researches in Electricity, Volume 1 Test for Acid in Water.—Take a piece of litmus paper. Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889 The change of the color to red indicates an acid substance; an alkali would turn the reddened litmus paper to blue, and the mauve and Georgina test-papers to green. Disputed Handwriting An exhaustive, valuable, and comprehensive work upon one of the most important subjects of to-day. With illustrations and expositions for the detection and study of forgery by handwriting of all kinds This sublimate will render blue a slip of red litmus paper. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Have you put litmus paper in the soil to test it for lime, potash and phosphorus? Mince Pie The pole b, though drawn through a much greater depth and quantity of fluid, was found so acid as to give abundant evidence to litmus paper, the tongue, and other tests. Experimental Researches in Electricity, Volume 1 "My, I should say it had!" and Albert held up the piece of litmus paper, now quite red from its contact with the soil. The Library of Work and Play: Gardening and Farming. His telegraph sent signals by having the electric spark transmitted by the wire decompose nitric acid and so record the signals on moist litmus paper. Masters of Space Morse, Thompson, Bell, Marconi, Carty Red Litmus Paper.—The preparation of the red litmus paper is similar to the above, the acid being added until a red color is obtained. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations They had, however, a test for sourness of land which is still practised even where the convenient litmus paper is available. Roman Farm Management The Treatises of Cato and Varro A similar piece of litmus paper, dipped in solution of sulphate of soda n, fig. Experimental Researches in Electricity, Volume 1 The oil, which is acidulated, and which then powerfully reddens litmus paper, is decanted. American Hand Book of the Daguerreotype At short intervals, the liquid is tested by means of litmus paper, and when it shows a faint acid reaction, by turning the blue paper red, the addition of acid is stopped. Scientific American Supplement, No. 447, July 26, 1884 This will be indicated by the blue litmus paper. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Next wash the precipitate with hot water until the washings cease to redden litmus paper. Scientific American, Volume 22, No. 1, January 1, 1870 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. Causing the spark to act upon a movable disk covered with litmus paper, he produced by the discoloration of the latter dots and dashes that formed an alphabet. Scientific American Supplement, No. 384, May 12, 1883 The solution reddens litmus paper, and, when impure, usually contains traces of oxide of iron. Scientific American Supplement, No. 401, September 8, 1883 The oil did not change litmus paper moistened with alcohol. Scientific American Supplement, No. 288, July 9, 1881 A piece of red litmus paper will readily detect the escaping ammonia, while its odor will indicate its presence with great certainty. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations It is therefore important to control the addition of milk of lime by the use of litmus paper. Scientific American Supplement, No. 286, June 25, 1881 On testing it with litmus paper, the solution may be either slightly alkaline or neutral; in either case, it should be faintly acidified with hydrochloric acid. Scientific American Supplement, No. 384, May 12, 1883 Place aside for a day or two, and then test with blue litmus paper; it will be found to be acid. A Practical Physiology When neither blue nor pink litmus paper changes color, what kind of substance,—acid, alkaline, or neutral,—is present? School and Home Cooking Lime, its hydrate and sulphide of calcium, have a strong alkaline reaction upon red litmus paper. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations The solution was tested with litmus paper, and was not acid. Insectivorous Plants You can ascertain the presence of alkali by using red litmus paper, which will be turned blue by the alkali in the soil, if the soil is moist enough. One Thousand Questions in California Agriculture Answered Test fresh milk with red litmus paper; it should turn the paper pale blue, showing that it is slightly alkaline. A Practical Physiology When pink litmus paper changes to blue, an alkaline substance is present. School and Home Cooking The soluble neutral salts change blue litmus paper to red. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations The secretion is almost colourless, slightly mucilaginous, and, judging by the manner in which it coloured litmus paper, more strongly acid than that of Drosera. Insectivorous Plants Any druggist can furnish the litmus paper, and give you a demonstration of how it acts on contact with alkali. One Thousand Questions in California Agriculture Answered It is alkaline or neutral to litmus paper. A Practical Physiology When neither pink nor blue litmus paper changes color a neutral substance is present, i.e. a substance neither acid nor alkaline. School and Home Cooking A piece of litmus paper indicates that this oil is acid, as it is quickly changed to red by contact with it. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations This fluid was tested each day with litmus paper, but never coloured it; and this circumstance I do not understand, as the superphosphate of lime is acid. Insectivorous Plants Once in a while a sailor would take from a jar a piece of litmus paper and expose it, showing only a slight discolouration due to carbon dioxide. The Dream Doctor Touch a few drops of blood fresh from the finger, with a strip of dry, smooth, neutral litmus paper, highly glazed to prevent the red corpuscles from penetrating into the test paper. A Practical Physiology If it changes color, keep adding the soda mixture, until the litmus paper does not change, as in Experiment 68. School and Home Cooking Go to TOC In the pure state, the alkaline earths are caustic, cause red litmus paper to become blue, and are more or less soluble in water. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations The secretion during the whole time coloured litmus paper of a bright red; but this may have been due to the presence of the acid super-phosphate of lime. Insectivorous Plants If more than a trace were present the litmus paper would not be sufficiently sensitive for the test. The Story of the Soil; from the Basis of Absolute Science and Real Life, Dip into it the end of a piece of blue litmus paper, and record the result. An Introduction to Chemical Science If the blue litmus paper changes color, carefully add a little more of the soda solution. School and Home Cooking This produces, in the blowpipe flame, an intense and splendid light, and now produces an alkaline reaction upon red litmus paper. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Therefore the acid which fresh leaves contain, as shown by their discolouring litmus paper when crushed, must be of a different nature from that present in the secretion. Insectivorous Plants In the main this soil is slightly acid," said Percy, after several tests, with the hydrochloric acid and the litmus paper; "although occasionally there are traces of limestone present. The Story of the Soil; from the Basis of Absolute Science and Real Life, Experiment 40.—Hold a piece of wet blue litmus paper in the fumes of SO2, and note the acid test. An Introduction to Chemical Science Dip the end of a piece of blue litmus paper in it. School and Home Cooking The neutral and soluble salts have an acid reaction upon blue litmus paper, and are decomposed by ignition. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations And in the case of several worms, the contents of the alimentary canal were found to be plainly acid, as shown by litmus paper. The formation of vegetable mould through the action of worms, with observations on their habits THE next forenoon Percy and Mr. West spent some time making some further tests with hydrochloric acid and litmus paper in different places on the farm; but the result only confirmed the previous examinations. The Story of the Soil; from the Basis of Absolute Science and Real Life, Dip into it a piece of red litmus paper, noting the effect. An Introduction to Chemical Science Test the mixture in the saucepan with blue litmus paper. School and Home Cooking Those soluble in it have an acid reaction upon litmus paper, changing the blue into red. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Moistened litmus paper will indicate the presence of a free acid, and in some cases treatment with ammonia fumes will restore the color. Forty Centuries of Ink or, a chronological narrative concerning ink and its backgrounds, introducing incidental observations and deductions, parallels of time and color phenomena, bibliography, chemistry, poetical effusions, citations, anecdotes and curiosa together with some evidence respecting the evanescent character of most inks of to-day and an epitome of chemico-legal ink. "The litmus paper is still the litmus paper," he enunciated in the formal manner of the lecturer. Moon-Face Test with red litmus paper the solutions obtained in the last two experiments. An Introduction to Chemical Science The solution has a strong metallic taste, and an acid reaction upon litmus paper. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations This has a strong hepatic odor, and exerts an alkaline reaction upon red litmus paper. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations When strongly heated and then moistened has an alkaline reaction on red litmus paper. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations He dropped a piece of litmus paper into an acid, when it changed instantly to red, and on floating it in an alkali it turned as quickly to blue. Moon-Face Bleach a piece of litmus paper, and try to restore the color with NH4OH. An Introduction to Chemical Science It changes blue litmus paper to red; is slowly soluble in water, and rather sparingly. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Magnesia and its hydrate are white and very voluminous, scarcely soluble in hot or cold water, and restores moistened red litmus paper to its original blue color. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Its soluble neutral salts change blue litmus paper to red. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations If the mineral be the seleniferous lead glance, sulphurous acid gas will be given off, and may be detected by the smell, or by a strip of moistened litmus paper. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Fuses and emits dense white fumes of SbO3, which pass off and redden blue litmus paper. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Its soluble neutral salts, when dissolved in water, change blue litmus paper to red. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations It now exerts upon red litmus paper an alkaline reaction. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Its soluble neutral salts change blue litmus paper to red, and are converted, by admixture of water, into insoluble basic and soluble acid salts. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations Antimonic acid and its hydrate changes moistened blue litmus paper to red. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations |
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