10-Piece Set Of Clear 250–300 Ml Winkler Oxygen Determination Bottles With Numbered Ground-Glass Stoppers – No. 1

A set of ten clear Winkler-pattern bottles for determining dissolved oxygen in water. Each bottle is individually calibrated and marked with its exact capacity, while its ground-glass stopper carries the corresponding identification number. The technical markings and serial arrangement give the set a strong and authentic laboratory character.