Set Of Four Jena Rasotherm Gas-Washing Bottles With Sintered-Glass Discs – No. 2

4 cylindrical laboratory glass gas-washing bottles with integral sintered-glass discs, external side tubes leading below the discs and ground-glass upper connections. JENA and RASOTHERM markings, signs of use and local discoloration of the discs. One head retains orange rubber tubing. With side-connection upper heads. A total of 10 similar objects are available in 3 separate sets and can be arranged as a group.