Set Of Three Straight Laboratory Glass Stopcocks With Long Stems – No. 2

Set of three laboratory glass stopcocks with two opposing long, straight stems, ground-glass plugs and crossbar handles. Rubber bands secure the plugs. Signs of use, with locally cloudy glass surfaces and discolouration around the ground joints. Distinctive glass components for tubing networks in laboratory and chemical industry sets. A total of 12 similar items in this design are available for grouped arrangements.