Thermo Scientific Nalgene Polypropylene Graduated Cylinder. No meniscus to confuse readings. Guaranteed to meet accuracy requirements of ASTM Class B, E1272. ISO Standard 6706. Large blue base prevents tipping. All sizes have generous pour spout. Molded in translucent polypropylene. Molded-in large, easy-to-read graduations. Can be chemically sterilized. Meets requirements of CFR 21, Part 177.1520. Material PPCO. Volume 25ml. Limit Of Error ±0.34ml. Graduations 0.5ml. Graduated Yes. Autoclavable Yes. Pack Qty 1.