Rubber And Rubber Planting. By R. H. Lock ..
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In our eReader you can find the full English version of the book. Read Rubber And Rubber Planting. By R. H. Lock .. Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Rubber And Rubber Planting. By R. H. Lock ..
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To quickly assess the difficulty of the text, read a short excerpt:
CHAPTER VII FACTORY WORK ON THE ESTATE General.
The latex, brought to the factory in tanks or buckets as it is collected from the trees, contains as a rule from 30 to 40 per cent, of pure caoutchouc. The latter is obtained in a state of considerable purity by the successive .processes of coagulation, washing and drying.
The method of preparing biscuit rubber by hand, as practised during the earliest beginnings of the industry, is now of little more than historical interest. It may serve however... to illustrate in their simplest form the nature of the chief processes concerned.
In this method the latex is first strained through a brass or copper wire sieve of small gauge, and then generally diluted with one or more times its own bulk of water. The diluted latex is next agitated with a dilute solution of acetic acid, containing about one volume of pure acid for every 1000 volumes of pure latex. The acidified latex is then poured into round shallow pans to set. Coagulation begins almost immediately, but the 154 RUBBER AND pans are allowed to stand for several hours until a firm cake of rubber of the consistency of cream cheese has formed upon the surface.
What to read after Rubber And Rubber Planting. By R. H. Lock ..?
You can find similar books in the "Read Also" column, or choose other free books by Robert Heath Lock to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
CHAPTER VII FACTORY WORK ON THE ESTATE General.
The latex, brought to the factory in tanks or buckets as it is collected from the trees, contains as a rule from 30 to 40 per cent, of pure caoutchouc. The latter is obtained in a state of considerable purity by the successive .processes of coagulation, washing and drying.
The method of preparing biscuit rubber by hand, as practised during the earliest beginnings of the industry, is now of little more than historical interest. It may serve however... to illustrate in their simplest form the nature of the chief processes concerned.
In this method the latex is first strained through a brass or copper wire sieve of small gauge, and then generally diluted with one or more times its own bulk of water. The diluted latex is next agitated with a dilute solution of acetic acid, containing about one volume of pure acid for every 1000 volumes of pure latex. The acidified latex is then poured into round shallow pans to set. Coagulation begins almost immediately, but the 154 RUBBER AND pans are allowed to stand for several hours until a firm cake of rubber of the consistency of cream cheese has formed upon the surface.
What to read after Rubber And Rubber Planting. By R. H. Lock ..?
You can find similar books in the "Read Also" column, or choose other free books by Robert Heath Lock to read onlineMoreLess
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