Polymethylpentene (PMP) graduated cylinders are double scale with easy-to-read numbers. Stable base makes cylinders tip and roll proof and have flared top for easy filling. The important qualities of PMP as a laboratory plastic are its high transparency, its rigidity and resistance to impact and withstand temperatures of up to 200° C for short periods (180° C continuously). Autoclavable. Graduations = 0.5 mL