Short neck Heavy wall 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 carefully controlled to provide the proper balance between thermal expansion and…

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…

Carefully designed and manufactured from borosilicate glass Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for greater shock resistance Excellent chemical durability provides contamination-free results and long life…

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.…

These 50mL PYREX® flat bottom boiling flasks have full length outer 24/40 Standard Taper joints, but with shorter necks. Adapter Nos. 8800, 8820 and 8825 are used to connect flasks with different size joints, thus allowing numerous combinations for diverse assemblies. Manufactured from…

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

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…

Apparatus for a wide range of organic chemistry experiments at a lower price than purchasing the components separately WHEATON standard taper Clear-Seal grease-free joints provide smooth, unground surfaces, which seal without grease and reduce seizing and contamination from grease Clear-Seal…

Quartz boiling flask.

With excellent chemical durability for contamination free results, these short neck borosilicate glass round bottom boiling flasks have a single neck with a full length Standard Taper outer joint.

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…

Round 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.

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.

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…

With short neck and outer joint. Available in standard and heavy wall. Heavy wall approximately 30% heavier than standard wall.

Available in various sizes, these borosilicate glass round bottom flasks have four vertical necks - one center neck and three side necks which are 90° apart. All necks have Standard Taper outer joints.

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.…

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.…

Round bottom flask with a single neck. Available in heavy wall.

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.

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.

Boiling, round bottom flasks with ground glass joints. Our boiling flasks are made from low-expansion borosilicate glass. Feature uniform wall thickness for superior mechanical strength and shock resistance. Ideal for boiling, heating and mixing in the laboratory.

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.

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

Available in various sizes, these borosilicate glass round bottom flasks have three vertical necks with Standard Taper outer joints. The side necks are 180° apart.

SYNTHWARE 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.

Round bottom, two neck flask. Side neck is angled. Available in standard wall for more rapid heating or heavy duty for mechanical shock resistance.

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.

These quality round bottom boiling flasks are made from heat-resistant borosilicate glass, and have 24/40 ground glass joints and thick walls. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer,…

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,

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.

These PYREX(r) pear-shaped boiling flasks have full length outer 24/40 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.…