Corning Pyrex 5642-250 250ml Class A Heavy Duty Volumetric Flat Bottom Flask with Polyethylene Standard Taper Stopper (Pack of 6) Reviews
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Corning Pyrex 5642-250 250ml Class A Heavy Duty Volumetric Flat Bottom Flask with Polyethylene Standard Taper Stopper (Pack of 6) Feature
- Capacity: 250mL; height: 252mm; outer diameter: 78mm; tolerance: +/- 0.12mL
- Made from borosilicate glass code 7740
- Flat bottom volumetric flask has a No. 16 linear high density polyethylene stopper with a closed bottom
- Reusable heavy duty flask has a long neck style
- Manufactured to class A tolerances as established by ASTM E-694 - ASTM E-542 - and ASTM E-288
These 250mL Class A PYREX volumetric flasks have machine-blown bodies to which are sealed heavy-beaded, heavy-tubing necks, tooled for No. 16 standard taper polyethylene stoppers. The linear high density polyethylene stoppers are made with a closed bottom to conform to standard taper stopper dimensions. The graduation line is sharp and permanent and large white block letters make the inscription easy to read. These Class A volumetric flasks have been manufactured to Class A tolerances as established by ASTM E-694 for volumetric ware, ASTM E-542 for calibration of volumetric ware, and ASTM E-288 for volumetric flasks. Material: Borosilicate Glass Code 7740. Capacity: 250mL. Flask Style: Volumetric. Flask Shape: Flat Bottom. Top Style: Standard Taper Stopper. Neck Style: Long. Stopper Style: HDPE. Standard Taper Stopper Number: No. 16. Flask Feature: Heavy Duty. Accuracy Class: Class A. Feature: Reusable. Tolerance: +/-0.12mL. Height: 252mm. Outer Diameter: 78mm. Corning#: 5642-250.
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Sep 17, 2011 23:38:03
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