Boiling Flasks

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 round...

Round bottom flask with two socket joints.

Round 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.

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.

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.

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

HEAVY WALL single neck flask with a standard taper outer joint. Low profile design allows the flask to sit upright on the bench and also permits easy access of products with a spatula or policeman. The flask contour is excellent for controlled evaporation of foaming solvents during rotary...

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.

Made 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...

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 joints...

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

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 cause cancer, birth...

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.

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.

Made 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...

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.

KIMAX® round-bottomed boiling flask Reinforced tooled top Designed from ASTM Specification E1403, Type II, Class I, requirements Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements

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.

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...

With long neck and standard taper 24/40 outer joint. Ace Glass's Flask, Single Neck, is a versatile piece of laboratory equipment used for boiling and mixing chemicals. It is constructed from durable glass, which can withstand high temperatures and chemical exposure. The single neck design allows...

Designed for sustained high-temperature applications, these Single Standard Taper Neck Heavy Wall Round Bottom Flasks offer enduring functionality and reliable results. Their heavy-wall design provides enhanced durability, while the single standard taper neck allows for easy attachment of stoppers...

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 No. 7740...

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.

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.