or
KIMAX brand Volumetric Flasks PTFE [Standard Taper] Stopper Class A 2L. Tolerance: +-0.5ml. Color-coded PTFE [Standard Taper] Stopper: 27. Handle Color: Red. Calibrated to contain. Marking spot. Type 1 Class A unserialized flasks of NNN-F-289. ASTM Specif