Laboratory and Scientific Equipment-Namely, Glassware and Plasticware for Laboratory Use, Apparatus for the Distillation and Treatment of Water, Cabinets, Ovens, Centrifuges, Mixers, Laboratory Safety and Protective Apparatus, Laboratory Instruments for Weighing, Controlling, Measuring, Monitoring, Signaling, Teaching and Analyzing, Leak Detectors, Polymer Seals for Joining Glassware and Sleeve Joints