Set Of Four Assorted Laboratory Glassware Pieces With Ground-Glass Stopcocks

An assorted set of four separate pieces of clear laboratory glassware: two elongated gas sampling tubes with twin stopcocks, one cylindrical single-stopcock vessel with a long outlet stem, and one shorter chamber with a lateral connection. Features ground-glass stopcocks, signs of use and localised yellowing around the ground joints. The stand and clamps are separate items.