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작성자 Rodrick
댓글 0건 조회 2회 작성일 24-10-13 17:49

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On leaving the machine they are piled in a heap and left over night, when fermentation units in, which outcomes within the starch being to a large extent hydrolysed and rendered soluble in water. In this the kier is vertical, and the circulation of the liquor is effected via a centrifugal or other type of pump, whereas the heating of the liquor is caused exterior the kier in a separate vessel between the pump and the kier via indirect steam. The roller revolves slowly, in order that the hanks, whereas passing continuously by the bleaching powder, are for the greater a part of the time being uncovered to the air.

Subsequently potash and later on soda was substituted for the cows’ dung, while sour milk was changed by sulphuric acid. 12) Bitter in sulphuric acid. 6) Sour in sulphuric acid. They are actually washed, run by dilute sulphuric or hydrochloric acid at 2° Tw. The machine consists basically of a series of copper or tinned iron cylinders, that are geared together so as to run at a uniform velocity. If, https://www.vapeenter.com/eleaf-mini-istick-10w-vv-mod-1050mah then again, the cotton needs to be subsequently dyed with direct cotton colours (see Dyeing), the presence of oxycellulose might end in uneven dyeing.

Its detection could also be effected by dyeing a sample of the bleached cotton in a cold, very dilute answer of methylene blue for about ten minutes, when any portions of the fabric wherein the cellulose has been transformed into oxycellulose will assume a darker colour than the remaining. The blueing might both be effected by dyeing or tinting with a colouring matter like Victoria blue 4R or acid violet, https://www.vapeuse.com/vandy-vape-jackaroo-70w-pod-mod-kit or https://www.vapeenter.com/smkon-deepfire-rta-4.5ml by treatment in wash stocks with a suspension of ultramarine in weak soap till the colour is uniformly distributed all through the material.

After bleaching with peroxide and drying, the straw consequently undergoes an additional process of sulphuring, i.e. exposure to gaseous sulphurous acid. As a rule the free acid could be detected by extracting the tendered material with distilled water and including to the extract a drop of methyl orange resolution, when the latter will flip pink if free acid be present. The nice bulk of cotton items is bleached in rope type, i.e. stitched collectively finish to finish and laterally collapsed, in order that they will move by means of a ring of 4 to 5 in.

It is of the greatest importance that the goods should be evenly packed, https://www.vapeuse.com/ijoy-captain-sub-ohm-tank for, if channels or loosely-packed places are left, the liquor circulating via the kier, when boiling is subsequently in progress, will comply with the line of least resistance, and the result's an uneven remedy.

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