Corning Pyrex® #5640-1, 1mL Class A Volumetric Flasks with Pyrex® Glass Standard Taper Stopper (Single)

These PYREX 1 mL test tube shaped volumetric flasks provide improved lab convenience, broad selection and precise volume measurement. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for No. 8 Standard Taper glass stoppers. 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.

• Capacity - 1 mL ± 0.01 mL
• Product Dimensions - 10 mm OD x 58 mm High without Stopper
• Type I Class A - Low-Expansion Borosilicate Glass, per ASTM E438
• This product is designed for volumetric measurement and therefore typical use will be at standard room temperature. Volumetric glassware should not be subjected to temperatures in excess of 150°C.
• This product will withstand repeated standard autoclave cycles of 121°C at 15 psi for 15 minutes.