 | Electric engineering - 1893
...paper, carefully removing any loose pieces of the ziuc. Just before making up the cell, dip the rim into dilute sulphuric acid, wash with distilled water, and dry with a clean cloth or filter paper. 8. The Zine Sulphate Solution. — Prepare a saturated solution of pure (" pure recrystallised ") zinc... | |
 | United States. National Bureau of Standards - Physics - 1904
...pure redistilled zinc, solder to one end a piece of copper wire, clean the whole with glass paper, carefully removing any loose pieces of the zinc. Just before making up the cell dip the ziuc into dilute sulphuric acid, wash with distilled water, and dry with a clean cloth or filter paper.... | |
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... carefully removing any loose pieces of the zinc. Just before making up the cell, dip the zinc into dilute sulphuric acid, wash with distilled water, and dry with a clean cloth or filter paper. 3. The Mercurous Sulphate. 
