 | United States. National Bureau of Standards - 1942 - 840 pages
...follows: Prepare a cold saturated solution of alum in water. Add ammonium hydroxide with constant stirring until the solution is alkaline to litmus, allow the...and store the residual cream in a stoppered bottle. (c) BASIC LEAD ACETATE (1) PREPARATION. — Basic lead acetate is the clarifying agent most extensively... | |
 | Association of Official Analytical Chemists - 1920 - 438 pages
...— Prepare a cold saturated solution of alum in water. Add ammonium hydroxid with constant stirring until the solution is alkaline to litmus, allow the...until the wash water gives only a slight test for sulphates with barium chlorid solution. Pour off the excess of water and store the residual cream in... | |
 | Great Western Sugar Company - 1920 - 274 pages
...obtained as follows. Add a slight excess of ammonium hydroxide to a cold saturated solution of alum, allow the precipitate to settle and wash by decantation with water until the wash water gives only a faint reaction for sulphates with barium chloride solution. Pour off the excess of water until the... | |
 | Roger Castle Griffin - 1921 - 696 pages
...(KAl sulfate) in water. Add NH4OH with constant stirring until the solution is alkaline to litmus; let settle and wash by decantation with water until the wash water gives only a slight test for sulfate with BaCl2. Pour off the excess of water and store the residual cream in a stoppered bottle.... | |
 | Alpheus Grant Woodman - 1924 - 552 pages
...— Prepare a cold saturated solution of alum in water. Add ammonium hydroxide with constant stirring until the solution is alkaline to litmus, allow the...until the wash water gives only a slight test for sulphates with barium chloride solution. Pour off the excess water and store the residual cream in... | |
 | Association of Official Analytical Chemists - 1925 - 582 pages
...Prepare a cold saturated solution of alum in water. Add strong ammonium hydroxide with constant stirring until the solution is alkaline to litmus, allow the...and store the residual cream in a stoppered bottle. (C) Dry basic lead acetate. — This clarifying agent is obtained as a dry powdered salt and should... | |
 | Roger Castle Griffin - 1927 - 970 pages
...Add cone. NH4OH with constant stirring until the solution is alkaline to litmus; let the precipitate settle and wash by decantation with water until the...wash water gives only a slight test for sulfates with BaC12 solution. Pour off the excess of water and store the residual cream in a stoppered bottle. (c)... | |
 | Roger Castle Griffin - 1927 - 968 pages
...(KA1 sulfate) in water. Add NH4OH with constant stirring until the solution is alkaline to litmus; let settle and wash by decantation with water until the wash water gives only a slight test for sulfate with BaClg. Pour off the excess of water and store the residual cream in a stoppered bottle.... | |
 | Association of Official Analytical Chemists - 1917 - 414 pages
...— Prepare a cold saturated solution of alum in water. Add ammonium hydroxid with constant stirring until the solution is alkaline to litmus, allow the...until the wash water gives only a slight test for sulphates with barium chlorid solution. Pour off the excess of water and store the residual cream in... | |
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Add strong ammonium hydroxide with constant stirring until the solution is alkaline to litmus, allow the precipitate to settle, and wash by decantation with water until the wash water gives only a slight test for sulfates with barium chloride solution. 