SYLICON CONICAL STOPPER - 37x28mm, h 38mm Back Catalog number: 3811 Availability: In the manufacturer's stock Price on request - + Recommended 639 CRYSTALIZATION VESSELS PTFE, 64mm Price on request 3852 CONICAL STOPPER 2 HOSES - 65x53mm, h 70mm Price on request 1687 BOTTLE FEP, 1000ml Price on request