Boiling Flasks

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  • PYREX Round Bottom Boiling Flasks

    Corning

    Round bottom Short ring neck These PYREX® round bottom boiling flasks have short ring necks. These ring neck boiling flasks are precisely tooled for uniform stopper fit. The reinforced rim increases mechanical strength. These flasks are used in applications requiring rigid stoppering…

  • Flasks, Heavy Wall, Round Bottom, Single Neck, 2mL to 65mL

    Chemglass

    Round bottom, HEAVY WALL single short neck flask with a standard taper outer joint. The 29/26 flasks have a groove tooled just below the grind to aid in clamping of the flask. Please note: There are separate listings for larger capacity round bottom flasks.

  • SYNTHWARE Pear Shaped Flasks

    Kemtech America

    SYNTHWARE pear shaped, heavy wall, single neck flasks with a standard taper outer joint. All sizes are hand blown from tubing to ensure uniform wall thickness.

  • Flask Boiling Flat Bottom 250ml

    DWK Life Sciences (Kimble)

    KIMAX boiling flask with a short joint neck. Designed from ASTM Specification E1403, Type I, Class 4 requirements.

  • SYNTHWARE Round Bottom Four Neck Flasks with Threaded Side Arms

    Kemtech America

    SYNTHWARE round bottom, heavy wall, four neck flasks with threaded side arm. Standard taper outer joints on both the center neck and the vertical side necks. Threaded side arm is for insertion of plain thermometer or bleed tube having an O.D. between 5.0mm and 7.5mm. Supplied complete with Nylon®…

  • Flask, Round Bottom, Four Neck, Ace-Thred

    Ace Glass

    Round bottom flask with four necks arranged 3 in-line and one #7 Ace-Thred neck (ideal for suspending a thermometer or probe) at 90 degrees. The 500ml and 250ml sizes have angled side necks while the larger sizes feature vertical necks. Available in he

  • PYREX® VISTA™ Short Neck Boiling Flasks with Flat Bottoms

    Corning

    PYREX VISTA flat bottom boiling flasks have full length outer 24/40 Standard Taper joints, but with shorter necks. Wall thicknesses are controlled to provide balance between thermal expansion and mechanical strength for greater shock resistance. The flat bottom boiling flasks are designed to ASTM E-1403.

  • Flasks, Quartz, Flat Bottom, Single Neck

    Chemglass

    Single neck, flat bottom, quartz flask with standard taper outer joint.

  • Heavy Wall 10L Round Bottom 3-Neck Flasks

    Across International

    Ai 10L heavy wall, 3-neck round bottom flask with 24/40 and 34/45 standard taper joint. Comes with two vertical 34/45 side necks and one 24/40 center neck. Glass material: high borosilicate glass 3.3.

  • Borosil® Round Bottom Boiling Flasks

    Borosil

    Borosil® Round Bottom Boiling Flasks have uniform wall thickness for even heat distribution. Constructed from stress-free borosilicate. Borosil® Boiling Flasks are heat-resistant. Built to withstand the demands of the modern lab, each flask has a flame-polished, beaded rim for added…

  • SYNTHWARE Microscale Round Bottom Flasks

    Kemtech America

    RounRound Bottom Flask, One Neck, Threaded, Synthware, Capacity: 5, 10, and 25mL, Joint: 14/10, Supplied with one open top compressioncap and one size 014 Viton O-ring and one PTFE-faced septad Bottom Flask, One Neck, Threaded, Synthware, Capacity: 5,

  • PYREX® Long Neck Boiling Flask

    Corning

    These 100mL PYREX(r) round bottom boiling flasks have long necks with tooled mouths and take a rubber stopper. They are manufactured from No. 7740 borosilicate glass. Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for…

  • SYNTHWARE Round Bottom Three Neck Flasks with Bottom Outlets

    Kemtech America

    SYNTHWARE round bottom, heavy wall, three neck flasks with a bottom outlet. Both the center neck and the vertical side necks are standard taper outer joints. The lower outlet is a 4mm straight bore PTFE stopcock. All sizes are hand blown from tubing to ensure uniform wall thickness.

  • Flasks, Receiving, Round Bottom, Single Neck, Spherical Joints, Plastic Coated

    Chemglass

    Round bottom, HEAVY WALL single short neck flask for use on rotary evaporators for receiving distillate. Joint at the top of the flask is a 35/25 socket. Plastic Coated to prevent injury from broken glass while preventing spillage of hazardous materials.

  • Flasks, PFA, Round Bottom, Single Neck

    Chemglass

    All PFA single neck round bottom flask with standard taper outer joint. Flask can withstand MAX temperature of 250°C and a MIN temperature of -200C.

  • PYREX® Pear-Shaped Boiling Flask, 14/20 Standard Taper Joint

    Corning

    These PYREX(r) pear-shaped boiling flasks have full length outer 14/20 Standard Taper joints and are manufactured from No. 7740 borosilicate glass. Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for greater shock resistance.…

  • Flask, Single Neck

    Ace Glass

    Round bottom flask with short neck and outer joint. Available in standard and heavy wall. Heavy wall approximately 30% heavier than standard wall. Used by glassblowers in fabricating single or multi-necked flasks.

  • Heavy Wall 2L Round Bottom 2-Neck Flasks

    Across International

    Ai 2L, 24/40 standard taper joint, heavy wall, round bottom 2-neck flask with one vertical 24/40 neck, and one angled 24/40 side neck. Glass material: high borosilicate glass 3.3.

  • Flask, Round Bottom, Stopcock Septum Port

    Ace Glass

    Round bottom, single neck flask with stopcock septum port side arm for use with air-sensitive material. Features a PTFE, 2mm bore stopcock. Available in standard wall and heavy wall versions. All flasks supplied with a 9096-32 septum.

  • Angled Two Neck Round Bottom Flasks

    DWK Life Sciences (Kimble)

    Two-neck heavy wall flask with Standard Taper outer joints Side neck is angled Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements

  • SYNTHWARE Round Bottom Flasks with Spherical Socket Joints

    Kemtech America

    SYNTHWARE round bottom boiling flasks with spherical socket joint. All sizes are heavy wall design and are hand blown from borosilicate tubing to ensure uniform wall thickness. These flasks can be used as replacements for the collection flask on rotary evaporators.

  • Flask, Two Necks, Vertical

    Ace Glass

    Two neck, one center and on vertical side neck, round bottom flask with standard taper joints. Available in standard wall or heavy wall.

  • SYNTHWARE Round Bottom Angled Four Neck Flasks

    Kemtech America

    SYNTHWARE round bottom, heavy wall, four neck flasks with standard taper outer joints on both the center neck and the angled side necks. All sizes are hand blown from tubing to ensure uniform wall thickness.

  • Boiling, Round Bottom, Short Neck Flasks, Standard Taper 14/20 Joint

    DWK Life Sciences (Kimble)

    KIMAX boiling flask with a short neck and a medium length standard taper joint. Designed from ASTM Specification E1403, Type II, Class 3 requirements.

  • Flask Boiling Flat Bottom 500ml

    DWK Life Sciences (Kimble)

    KIMAX® boiling flask with a short Standard Taper joint neck. Designed from ASTM Specification E1403, Type I, Class IV requirements Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements

  • SYNTHWARE Round Bottom Angled Three Neck Flasks

    Kemtech America

    SYNTHWARE round bottom, heavy wall, three neck flasks with standard taper outer joints on both the center neck and the angled side necks. All sizes are hand blown from tubing to ensure uniform wall thickness.

  • Flasks, Heavy Wall, Round Bottom, Single Neck, 100mL to 300mL

    Chemglass

    Round bottom, HEAVY WALL single short neck flask with a standard taper outer joint. The 29/26 flasks have a groove tooled just below the grind to aid in clamping of the flask. Please note: There are separate listings for different capacity single neck round bottom flasks.

  • Flask Florence Flat Bottom 6000ml

    DWK Life Sciences (Kimble)

    KIMAX® flasks have a low coefficient of expansion to resist thermal shock. They are constructed with sturdy walls to minimize mechanical breakage and reinforced tooled tops for strength and a secure stopper fit Designed from ASTM Specification E1403, Type I, Class I requirements …

  • Flask, Round Bottom, Beaded Tube Port or Well

    Ace Glass

    Round bottom, single neck flask with either a beaded tube end port or a beaded tube end well. Well I.D. on 6935-03 thru 6935-17 is approximately 9.5mm. Well I.D. on 6935-64 thru 6935-78 is approximately 9mm.

  • Boiling, Round Bottom, Short Neck Flasks, Full Length standard taper 24/40 Joint

    DWK Life Sciences (Kimble)

    KIMAX boiling flask designed from ASTM Specification E1403, Type II, Class 3 requirements.

  • PYREX® VISTA™ Short Neck Boiling Flasks with Round Bottoms

    Corning

    PYREX round bottom boiling flasks have full length outer Standard Taper joints, but with shorter necks. They are manufactured from No. 7740 borosilicate glass. Wall thicknesses are controlled to provide balance between thermal expansion and mechanical strength for greater shock resistance. The…

  • Flasks, Recovery, Heavy Wall, Wide Mouth, Single Neck, GL80

    Chemglass

    Heavy wall, wide mouth flask with a GL80 glass thread and a 24/40 connecting adapter. Flasks have a heavy wall for vacuum applications and are balanced to prevent run-out during rotation. Unique design makes it easier to handle highly viscous liquids, powders, and solids. The large opening permits…

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