Ultra-clear safety-coated glassware helps stop and control spills in the event of glassware breakage. If a break does occur, the durable odor-free glassware will reduce the hazards of shattered glass and leakage of toxic or corrosive chemicals. Glassware has a unique nonslip surface when wet or dry.Class A graduated cylinders are unique with reverse metric scale with white markings. Cylinders include a bumper and a ground base for stability. Autoclavable to120°C (250°F).