Precision-molded cylinders meet accuracy requirements of Fed. Spec. ASTM E1272 (Class B), "Cylinder Graduated, Laboratory Glass." These cylinders cost substantially less than comparable glass cylinders and are shatter-proof. Cylinders feature molded-in graduations and resist temperatures to 135°C. The blue base is polypropylene. POLYMETHYLPENTENE.
Nalgene™ PMP Graduated Cylinders