Columns acc. to HempelColumns acc. to Hempel with remo-vable glass jacketColumns acc. to Hempel with fixedvacuum jacketGlass beads
Glass rings acc.to RaschigColumns acc. toVigreuxColumns acc. to Vigreux with remo-vable glass jacketColumns acc. to Vigreux with fixedvacuum jacket


   


Column heads withvalve stopcock