This is done several times, the number depending on the quality of graining that the expert desires to produce. [Please select]
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The amount of salt required for "graining out" varies with the raw material used. [Please select]
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_--The nigres are boiled and the liquor separated by graining with salt. [Please select]
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Repeat the process of closing, graining and settling and take a sample of lye. [Please select]
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Boiling is continued until the faint caustic taste on applying the cooled sample to the tongue is permanent, when it is ready for "graining out". [Please select]
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_, pasting, graining out, and boiling on strength, are proceeded with; the clear boiling by means of a closed steam coil is continued until the "head" is boiled out and the soap is free from froth. [Please select]
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