【Daily Question】Chemical Analysis Version, 2021.5.18
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1. The glass reference electrode for thiol sulfides should have a minimum (); the glass reference electrode is placed in cold chromic acid solution and stirred for no more than 10 seconds for cleaning. Keep the lower half of the electrode submerged in water when not in use. A Once a day B Once a week C Once a month B
It is clearly specified in B GB/T 1792-2015 \"Determination of thiol sulfur in gasoline, kerosene, jet fuel, and distillate fuels – Potentiometric titration method\".