Gas generators, acc. to Kipp

New model, with 2 screw threads GL 25, 1 screw thread GL 45 and GL 18, with needle valve stopcock with overtwist device, with tubulature at bottom, jointless, total grease free, apparatus, complete with safety funnel, with caps and seals, with hole disc, made of sterilizable silicone, 500 ml capacity of middle bulb, made of borosilicate glass