Flasks, Supplies, Boiling Flasks
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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…
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Flask, Round Bottom, Three Neck
Ace GlassRound bottom flasks, three vertical necks, standard taper outer joints, standard and heavy wall. Flasks feature a flare-out directly below the center joint to facilitate cleaning and removal of stir blades.
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Single Neck Flat Bottom Flasks
ChemglassSingle neck, flat bottom flask with a standard taper outer joint.
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Round Bottom Five Neck Flask, Ace-Thred
Ace GlassRound bottom flask with five necks arranged 3 in-line, one standard taper front and one #7 Ace-Thred front (ideal for suspending a thermometer or probe). All necks are vertical. Available in heavy wall. Supplied complete with a 5029-10 nylon bushing an
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Flask, Two Necks, Vertical
Ace GlassTwo neck, one center and on vertical side neck, round bottom flask with standard taper joints. Available in standard wall or heavy wall.
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Flask, Round Bottom, Ace-Thred Side Port
Ace GlassRound bottom, single neck flask with Ace-Thred side port supplied with our 5029-10 nylon bushing and 7855-704 FETFE o-ring. Bushing is ideal for use with thermometers or bleed tubes of up to 7mm OD. Available in standard and heavy wall versions.
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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.
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Round Bottom Boiling Flasks, SJ Joint, Heavy Wall, with Plastic Safety Coating
DWK Life Sciences (Kimble)KimCote® plastic-coated single neck flask with a SJ socket joint. Useful as rotary evaporator condensate collection flask or as a replacement for European designation KS 20/35.
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Round bottom, single neck flasks design for use with our 6810 series giant extractor apparatus.
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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.
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Flat-Bottom Flasks
GSC International, Inc.These quality flat bottom boiling flasks are made from heat-resistant borosilicate glass, and have narrow mouths, tooled top finishes, and thick walls. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including lead, which are known to the State of California to…
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SYNTHWARE Round Bottom Vertical Three Neck Flasks
Kemtech AmericaSYNTHWARE round bottom, heavy wall, three neck flasks with standard taper outer joints on both the center neck and the vertical side necks. All sizes are hand blown from tubing to ensure uniform wall thickness.
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Florence Boiling Flasks
EiscoMade of high quality, heavy duty borosilicate glass Narrow neck, flat bottom, beaded rim Perfect for any science or home laboratory Florence boiling flask made out of high quality, heavy duty borosilicate glass. Narrow neck, beaded rim and flat bottom. No stopper included. Autoclavable, with…
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ValueWare® Round Bottom Flasks, Short Neck, Full-Length
DWK Life Sciences (Kimble)Manufactured from KIMAX™ borosilicate glass, ValueWare has a low coefficient of expansion and a very high resistance to chemical attack. This means optimal performance in the lab at an affordable price. Long life expectancy, resistant to most chemicals. Ideal for general laboratory use.…
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Flask, Round bottom, Two Neck
Ace GlassRound bottom, two neck flask. Side neck is angled. Available in standard wall for more rapid heating or heavy duty for mechanical shock resistance.
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SYNTHWARE Flat Bottom Flasks
Kemtech AmericaSYNTHWARE flat bottom boiling flasks with full length standard taper outer joint. All sizes are heavy wall design and are hand blown from borosilicate tubing to ensure uniform wall thickness.
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Flask, Round Bottom, Ace-Thred Side Port
Ace GlassRound bottom, single neck flask with Ace-Thred side port supplied with our 5029-10 nylon bushing and 7855-704 FETFE o-ring. Bushing is ideal for use with thermometers or bleed tubes of up to 7mm OD. Available in standard and heavy wall versions.
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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.
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These PYREX(r) 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 carefully controlled to provide the proper balance between thermal expansion and mechanical strength for…
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Pear Shaped Boiling Flasks
DWK Life Sciences (Kimble)Single-neck flask with a Standard Taper outer joint at top Heavy wall Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements
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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
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These 22L PYREX(r) round bottom boiling flasks have short ring necks and take a No. 14 rubber stopper. 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 and…
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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.
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Heavy Wall 10L Round Bottom 3-Neck Flasks
Across InternationalAi 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.
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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.
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Flask 1000 ml
CorningThis specially designed PYREX® 1L boiling flask is a replacement part for the PYREX® Cyanide Distilling Apparatus (No. 3350-C).
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Flask, Round Bottom, Single Neck
NDS Technologies5 mL 14/20 center neck Single neck round bottom flask with an outer joint.
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Round bottom, HEAVY WALL single short neck flask with a spherical socket joint. Flasks having a 35/20 socket joint are used as replacements for the collection flask on rotary evaporators.
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SYNTHWARE Round Bottom Flasks
Kemtech AmericaSYNTHWARE round bottom boiling flasks with full length standard taper outer joint. All sizes are heavy wall design and are hand blown from borosilicate tubing to ensure uniform wall thickness.
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Flask, Round Bottom, 3 Neck, Angular
United Scientific SuppliesUnited Scientific™ three-necked boiling flasks with ground glass 24/40 joints are made from low-expansion borosilicate glass. Feature uniform wall thickness for superior mechanical strength and shock resistance. 24/40 ground glass joints Available in four capacities Made from…
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Flask, Round Bottom, Four Neck
Ace GlassRound bottom flask with four necks arranged 3 in-line and one 10/30 joint at 90 degrees. The 500ml size has angled side necks while all other sizes feature vertical necks. Available in heavy wall.