Wide mouth design facilitates mixing, pipette access, sampling and filling. Unique Flat Bottom Interior permits the use of a standard stir bar. Large permanent white letters make the capacity clearly visible. Flasks are calibrated "To Contain" at Class A tolerances, per ASTM E288 specifications. Includes colored handle PTFE stopper.
                    Unit of Measure
                    
               
        
            | Item No. | N/A 4256-20 | 
| Item Description | N/A Volumetric Flask, Wide Mouth with PTFE Stopper, 250mL, Tol. ± 0.20, #19 Green Stopper, 269mm Approx. Height | 
| Capacity | N/A 250 mL | 
| Tolerance (±) | N/A 0.20 mL | 
| Stopper Size | N/A 19 | 
| Approximate Overall Height | N/A 269 mm | 
| Stopper Color | N/A Green | 
| Pkg. Qty. | N/A 1 | 


