Corning

Photo of Corning 5400 PYREX® Iodine Determination Flasks with Glass No. 22 Standard Taper Stopper

These PYREX® iodine determination flasks are blown in specially designed molds, thereby insuring uniformity and proper contour. The stopper projects above the liquid seal trough to facilitate removal. For replacement stoppers, see Corning No. 7640N. Reference: ASTM D-29 and D-555.

Photo of Corning 5100 PYREX® Wide Mouth Graduated Erlenmeyer Flasks with Heavy Duty Rim

These PYREX® wide mouth Erlenmeyer flasks are especially recommended for use as titration flasks and are designed with heavy duty rims to reduce chipping. For convenience, these flasks are graduated in durable white enamel to show the approximate capacity and have an extra large marking spot. Their uniform wall thickness provides the proper balance between mechanical strength and thermal shock resistance.

Photo of Corning 5020 PYREX® Narrow Mouth Erlenmeyer Flask with PYREX® Standard Taper Stopper

These narrow mouth PYREX® Erlenmeyer flasks have PYREX® Standard Taper PYREX® stoppers. Their uniform wall thickness provides the proper balance between mechanical strength and thermal shock resistance. For convenience, these flasks are graduated to show approximate capacity. The 25, 50 and 125mL flasks are satisfactory for use as weighing bottles. For replacement stoppers see Corning No. 7650.

Photo of Corning 4720-500 PYREX® 500mL Church Distilling Flask

These 500mL PYREX® distilling flasks are used for the distillation of bituminous materials suitable for road treatment. Also used in the Standard Method of Test of the Distillation of Creosote Oil, American Wood Preservers Association, method 11e, Barrett method C 9, American Association of State Highway Officials, methods T 52 and T 62. Flasks take a No. 5 rubber stopper.

Photo of Corning 5000 PYREX® Narrow Mouth Erlenmeyer Flask with Standard Taper Joint

These narrow mouth PYREX® Erlenmeyer flasks have Standard Taper joints for secure sealing. Their uniform wall thickness provides the proper balance between mechanical strength and thermal shock resistance. For convenience, these flasks are graduated to show approximate capacity. An extra large marking space is also provided.

Photo of Corning 5341 PYREX® Heavy Wall Filtering Flasks with Replaceable Tubulation

These PYREX® heavy wall flasks have seated a bent, removable plastic tubulation in a grommet. Should the flask be upset, the grommet acts as a shock absorber. For convenience, the flasks are graduated to show approximate capacity. The neck finish affords an excellent fit for rubber stoppers. Tubulation O.D. is 12.5mm.

Photo of Corning 5320 PYREX® Filtering Flask without Sidearm Tubulation

These flasks without tubulation are blown in special molds in shapes designed to give maximum mechanical strength. These flasks are graduated to show their approximate capacity. Marked "Filter Flask" to avoid confusion with similar sizes of Erlenmeyer flasks. All flasks have permanent white enamel graduations and marking spots.

Photo of Corning 65340 PYREXPLUS® Coated Heavy Wall Filtering Flasks with Sidearm Tubulation

These PYREXPLUS®-coated heavy wall flasks have a protective PVC coating for longer product life and safety. Protective coating helps prevent glass from shattering and reduces spills. Autoclavable (121°C) and resistant to thermal shock. For convenience, the flasks are graduated to show approximate capacity. Tubulation O.D. is 10mm on sizes up thru 1000mL. Tubulation O.D. is 12.5mm on 2000 and 4000mL sizes. The tubulation is not coated to allow easy connection of standard size tubing. Covered by U.S. Patent# 4940613.

Photo of Corning 4960 PYREX® Three Neck Distilling Flask with Vertical Neck Standard Taper Joints

These PYREX® three neck flasks have two vertical side necks with full length outer Standard Taper joints and a vertical center neck with a full length Standard Taper joint.

(Sample Photo Shown. Individual items may differ from the image shown.)

Photo of Corning 4620 PYREX® Side-Arm Distilling Flasks

These PYREX® distilling flasks are used are suitable for microchemical applications. The sidearm on all sizes, except 125mL, is approximately 77mm below the top of the neck at an angle of 75°. Adaptable for use with thermometers calibrated for 76mm immersion. The sidearm of the 125mL flask is located approximately 137mm from the bottom of the flask to meet the requirements of ASTM E-1405 and can be used in ASTM tests D-86, D-233 and D-447.

Photo of Corning 5644 PYREX® Class A Volumetric Flask with PTFE Stopper

These Class A PYREX® volumetric flasks have machine-blown bodies to which are sealed heavy-beaded, heavy-tubing necks, tooled for PTFE color-coded keyhole stoppers. For replacement stoppers see Corning No. 7630. The graduation line is sharp and permanent. 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.

Photo of Corning 5420 PYREX® Round Bottom Kjeldahl Flask with Long Neck

These PYREX® Kjeldahl flasks have tooled finished necks for extra strength and uniform rubber stopper fit. Wall thickness is controlled to offer the optimum balance between thermal shock and chemical resistance. They can be used in ASTM E-258 procedures. Care must be taken to ensure the bottoms of the flasks do not come in contact with the heating elements. Most Kjeldahl equipment manufacturers have ring supports for this purpose. Reference: ASTM E-1377.

Photo of Corning 5660 PYREX® Class A Lifetime Red Volumetric Flask with Glass Standard Taper Stopper

These Class A PYREX® Lifetime Red volumetric flasks have the capacity mark etched as a fine line through a narrow red band into clear glass, making a filler unnecessary and giving high legibility, accuracy and permanence. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for ST glass stoppers. For replacement stoppers see Corning No. 7650.

Photo of Corning 5600 PYREX® Class A Lifetime Red Volumetric Flask with Polyethylene Snap-Cap

These Class A PYREX® Lifetime Red volumetric flasks have the capacity mark etched as a fine line through a narrow red band into clear glass, making a filler unnecessary and giving high legibility, accuracy and permanence. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for polyethylene snap-caps. For replacement snap-caps see Corning No. 7666.

Photo of Corning 5680 PYREX® Class A Certified and Serialized Volumetric Flasks with Glass Standard Taper Stopper

Calibrated to Class A tolerances in accordance with ASTM E542 and E288. Each flask is individually serialized and supplied with a Certificate of Identification and Capacity traceable to NIST standards. The graduation line is sharp and permanent and large white block letters make the inscription easy to read. Supplied with a Standard Taper stopper. Now tested and calibrated in an ISO/IEC 17050 certified laboratory.

(Sample Photo Shown. Individual items may differ from the image shown.)

Photo of Corning 5642 PYREX® Class A Volumetric Flask with Polyethylene Standard Taper Stopper

These Class A PYREX® volumetric flasks have machine-blown bodies to which are sealed heavy-beaded, heavy-tubing necks, tooled for Standard Taper polyethylene stoppers. The linear high density polyethylene stoppers are made with a closed bottom to conform to Standard Taper stopper dimensions. For replacement stoppers see No. 7624. The graduation line is sharp and permanent and large white block letters make the inscription easy to read.

Photo of Corning 5640 PYREX® Class A Volumetric Flasks with PYREX® Glass Standard Taper Stopper

These PYREX® 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 ST glass stoppers. The graduation line is sharp and permanent and large white block letters make the inscription easy to read. The 1mL and 2mL sizes are test tube shaped. Sizes 3L thru 6L have ST pennyhead stoppers.

Photo of Corning 5641 PYREX® Economy Volumetric Flasks with Glass Standard Taper Stopper

Economy flasks designed for those that do not require the precision accuracy of our Class A capacity flasks. Capacity tolerances are twice those specified for Class A volumetric ware. The graduation line is sharp and permanent large white block letters make inscriptions easy to read. Supplied with Standard Taper ground glass stoppers.

(Sample Photo Shown. Individual items may differ from the image shown.)

Photo of Corning 65640 PYREXPLUS® Coated Class A Volumetric Flask with Glass Standard Taper Stopper

These PYREXPLUS® volumetric flasks feature a protective PVC coating for longer product life and safety. Protective coating helps prevent glass from shattering and reduces spills. Flasks are autoclavable (121°C) and resistant to thermal shock. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for Standard Taper glass stoppers. The graduation line is sharp and permanent and large white block letters make the inscription easy to read.

Photo of Corning 70640 PYREX® VISTA™ Class A Volumetric Flasks with PYREX® Glass Standard Taper Stopper

These PYREX® VISTA™ volumetric flasks provide precise volume measurement. The necks are tooled for Standard Taper glass stoppers. The graduation line is sharp and permanent and large blue 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.

(Sample Photo Shown. Individual items may differ from the image shown.)