Pair Of Laboratory Glass Stopcocks With Three Connections

Pair of laboratory glass stopcocks of differing designs, each with two opposing straight sidearms and a third, axial connection. Ground-glass plugs and T-shaped glass handles. One has a short hose connector; the other has a longer glass tube connected through a bulbous section. Signs of use and storage, with more pronounced cloudiness and yellowish discolouration on one piece. Detail props for laboratory and chemical industry sets. Operation and leak-tightness have not been tested.