Lighter in weight than glass, Thermo Scientific Nalgene Class B Polypropylene Copolymer Volumetric Flasks with Closure offer excellent chemical resistance and are calibrated To Contain and To Deliver at 20C (68F)
Break resistant, excellent chemical resistance for years of dependable use in your lab
Individually hand calibrated, permanent color graduation line and oval marking spot for ease in reading fluid levels
No meniscus to confuse readings
Meets ASTM E 288 and ISO 384 Class B tolerances for consistent quality and dependability