Rinse three portions of approximately 10.00-mL of distilled water through the empty buret that contained the 0.20 M HCl. You are finished using this buret. 20. Pour the measured 50-mL buffer solution ...

Thiosulfate is dispensed by a buret driver (either Titronic or Dosimat) fitted with a 1.0 mL buret. The ODF method uses a whole-bottle modified-Winkler titration following the technique of Carpenter ...