Bel-Art Single Scale 250ml Polypropylene Graduated Cylinder; 2.0ml Graduation (F28456-0000) 250mL graduated cylinder with molded single-scale readings and 2mL graduations for laboratory and classroom use Polypropylene construction improves reading accuracy by preventing meniscus from forming, resists most chemicals, and provides dimensional stability Polygon-shaped base provides stability and prevents rolling if tipped Molded pour spout reduces dripping and spills Steam autoclavable to 121 degrees C/250 degrees F