With large, stable bases and convenient molded-in graduated scales, Gilson’s Plastic Graduated Cylinders are available in a range of sizes from 10ml to 2,000ml. They are constructed of rigid, transparent Polymethylpentene (PMP), which resists impact. The cylinders can be heated to 275°F (135°C). Single-scale graduations from 0.2ml to 20ml. Not recommended for use with chlorinated solvents or strong oxidizing agents.