Graduated cylinders have a "Total Contained, Total Delivered" single scale with raised numerals for easy reading. Flared top rims and large spouts facilitate pouring, and hexagon shaped bases provide stability. The "non-wetting" polypropylene surface eliminates concave meniscus and makes reading easier and more accurate. Chemically resistant and autoclavable at 121ºC (250ºF). Translucent.