... be cataloged as: Ordinary model, Gland model, Branch Manifold Ordinary model, Branch Manifold Gland model.XO-12B Model Branch Manifold Freezing DryerMain ... accelerate drying speed;5. Both cold trap and operation table are made of stainless steel, anticorrosion, easy to clean ... small size, easy to operate, reduce occupation of labs table-board;9. Optional equipped with nitrogen gas charging valve. ...