20 Best and Coolest Neck Flasks

 

Chemglass CG-1520-10 Glass 500mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 2440 Standard Taper Outer Joint and 20 Degree Angle

Chemglass CG-1520-10 Glass 500mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 24/40 Standard Taper Outer Joint and 20 Degree Angle

Chemglass CG-1520-10 Glass 500mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 24/40 Standard Taper Outer Joint and 20 Degree Angle - Flasks with joint sizes other than those listed are available. Flasks with 10/30 side neck are for use with cg-3506 thermometers. Round bottom, heavy wall two neck flask with standard taper outer joints on both the center neck and angled side neck. The 29/26 center neck flasks have a groove tooled just below the grind to aid in clamping of the flask.

 

Laboy HMF010324 Glass Single Neck Round Bottom Boiling Flask 500 mL with 1420 Joint

Laboy HMF010324 Glass Single Neck Round Bottom Boiling Flask 500 mL with 14/20 Joint

Laboy HMF010324 Glass Single Neck Round Bottom Boiling Flask 500 mL with 14/20 Joint - Laboy glass flasks are heavy wall designed, made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in chemistry processes like heating and cooling. Round-bottom flasks (also called round-bottomed flasks, flasks, round bottom, or rb flasks)having spherical bottoms are more resistant to fracturing under vacuum, as a sphere more evenly distributes stress across its surface. Because of the spherical bottom, cork rings are needed to keep the round bottom flasks upright. The flasks are usually used in heating or boiling a liquid, in distillation as distilling flasks and receiving flasks for the distillate, used as the distilling flasks in rotary evaporators. When in use, round-bottom flasks are commonly held at the neck by flask clamps on a stand.

 

Chemglass CG-1506-25 Glass 2000mL Heavy Wall Single Neck Round Bottom Flask with 2440 Standard Taper Outer Joint

Chemglass CG-1506-25 Glass 2000mL Heavy Wall Single Neck Round Bottom Flask, with 24/40 Standard Taper Outer Joint

Chemglass CG-1506-25 Glass 2000mL Heavy Wall Single Neck Round Bottom Flask, with 24/40 Standard Taper Outer Joint - 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. Flasks with joint sizes other than those listed are available.

 

Chemglass CG-1520-04 Glass 250mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 2440 Standard Taper Outer Joint and 20 Degree Angle

Chemglass CG-1520-04 Glass 250mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 24/40 Standard Taper Outer Joint and 20 Degree Angle

Chemglass CG-1520-04 Glass 250mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 24/40 Standard Taper Outer Joint and 20 Degree Angle - Round bottom, heavy wall two neck flask with standard taper outer joints on both the center neck and angled side neck. Flasks with 10/30 side neck are for use with cg-3506 thermometers. The 29/26 center neck flasks have a groove tooled just below the grind to aid in clamping of the flask. Flasks with joint sizes other than those listed are available.

 

Laboy HMF011424 Glass 500 mL 3 Neck Round Bottom Boiling Flask with 1922 Center and Side Joints Angled

Laboy HMF011424 Glass 500 mL 3 Neck Round Bottom Boiling Flask with 19/22 Center and Side Joints Angled

Laboy HMF011424 Glass 500 mL 3 Neck Round Bottom Boiling Flask with 19/22 Center and Side Joints Angled - With 2 necks having the same joints laboy glass flasks are heavy wall designed, made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in chemistry processes like heating and cooling. This multi-neck flask has three standard taper ground joint.

 

Laboy HMF011314 Glass 100 mL 2 Neck Round Bottom Boiling Flask with 2440 Center Joint and 1420 Side Joint Angled

Laboy HMF011314 Glass 100 mL 2 Neck Round Bottom Boiling Flask with 24/40 Center Joint and 14/20 Side Joint Angled

Laboy HMF011314 Glass 100 mL 2 Neck Round Bottom Boiling Flask with 24/40 Center Joint and 14/20 Side Joint Angled - With 2 necks having the same joints laboy glass flasks are heavy wall designed, made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in chemistry processes like heating and cooling. This multi-neck flask has two standard taper ground joint on the centre neck and the side angled neck.

 

100mL Conical Flask - Wide Neck - Eisco Labs 33 Borosilicate Glass single flask

100mL Conical Flask – Wide Neck – Eisco Labs 3.3 Borosilicate Glass (single flask)

100mL Conical Flask – Wide Neck – Eisco Labs 3.3 Borosilicate Glass (single flask) - Glass erlenmeyer wide neck flask 100ml, borosilicate ( single flask ).

 

Laboy HMF010309 Glass Single Neck Round Bottom Boiling Flask 50 mL with 2440 Joint

Laboy HMF010309 Glass Single Neck Round Bottom Boiling Flask 50 mL with 24/40 Joint

Laboy HMF010309 Glass Single Neck Round Bottom Boiling Flask 50 mL with 24/40 Joint - When in use, round-bottom flasks are commonly held at the neck by flask clamps on a stand. Round-bottom flasks (also called round-bottomed flasks, flasks, round bottom, or rb flasks)having spherical bottoms are more resistant to fracturing under vacuum, as a sphere more evenly distributes stress across its surface. The flasks are usually used in heating or boiling a liquid, in distillation as distilling flasks and receiving flasks for the distillate, used as the distilling flasks in rotary evaporators. Because of the spherical bottom, cork rings are needed to keep the round bottom flasks upright. Laboy glass flasks are heavy wall designed, made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in chemistry processes like heating and cooling.

 

Precision 1000mL Three Angled Neck Round Bottom Flask 2440 Heavy Wall Borosilicate Glass

Precision 1000mL Three Angled Neck Round Bottom Flask, 24/40, Heavy Wall, Borosilicate Glass

Precision 1000mL Three Angled Neck Round Bottom Flask, 24/40, Heavy Wall, Borosilicate Glass - Heavy wall design increases mechanical strength. 303028 style three-neck, round bottom flask size 1000 ml joint 24/40 material borosilicate glass astm spec e438 supplier precision labware. Three-neck round bottom flask with standard taper outer joints of 24/40 on both the center neck and angled side necks. Catalog no.

 

Goldleaf Scientific Laboratory Supplies 1000mL Heavy Wall 2 Neck Round Bottom Flask w 2440 Standard Taper Outer Joint

Goldleaf Scientific Laboratory Supplies 1000mL Heavy Wall 2 Neck Round Bottom Flask w/ 24/40 Standard Taper Outer Joint

Goldleaf Scientific Laboratory Supplies 1000mL Heavy Wall 2 Neck Round Bottom Flask w/ 24/40 Standard Taper Outer Joint - Round bottom, heavy wall two neck flask with 24/40 standard taper joints on both the center neck and 20° angled side neck.

 

Chemglass CG-1520-14 Glass 1000mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 2440 Standard Taper Outer Joint and 20 Degree Angle

Chemglass CG-1520-14 Glass 1000mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 24/40 Standard Taper Outer Joint and 20 Degree Angle

Chemglass CG-1520-14 Glass 1000mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 24/40 Standard Taper Outer Joint and 20 Degree Angle - Flasks with 10/30 side neck are for use with cg-3506 thermometers. Flasks with joint sizes other than those listed are available. The 29/26 center neck flasks have a groove tooled just below the grind to aid in clamping of the flask. Round bottom, heavy wall two neck flask with standard taper outer joints on both the center neck and angled side neck.

 

50ml Erlenmeyer Flask  Narrow Neck Eisco Labs 33 Borosilicate Glass  Single flask

50ml Erlenmeyer Flask ; Narrow Neck, Eisco Labs 3.3 Borosilicate Glass ( Single flask )

50ml Erlenmeyer Flask ; Narrow Neck, Eisco Labs 3.3 Borosilicate Glass ( Single flask ) - Eisco labs glass erlenmeyer narrow neck flask 50ml, borosilicate ( single flask ) 25 ml graduations.

 

Laboy HMF010325 Glass Single Neck Round Bottom Boiling Flask 500 mL with 1922 Joint

Laboy HMF010325 Glass Single Neck Round Bottom Boiling Flask 500 mL with 19/22 Joint

Laboy HMF010325 Glass Single Neck Round Bottom Boiling Flask 500 mL with 19/22 Joint - When in use, round-bottom flasks are commonly held at the neck by flask clamps on a stand. Round-bottom flasks (also called round-bottomed flasks, flasks, round bottom, or rb flasks)having spherical bottoms are more resistant to fracturing under vacuum, as a sphere more evenly distributes stress across its surface. Laboy glass flasks are heavy wall designed, made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in chemistry processes like heating and cooling. The flasks are usually used in heating or boiling a liquid, in distillation as distilling flasks and receiving flasks for the distillate, used as the distilling flasks in rotary evaporators. Because of the spherical bottom, cork rings are needed to keep the round bottom flasks upright.

 

Laboy HMF011435 Glass 1000 mL 3 Neck Round Bottom Boiling Flask with 2440 Center and Side Joints Angled

Laboy HMF011435 Glass 1000 mL 3 Neck Round Bottom Boiling Flask with 24/40 Center and Side Joints Angled

Laboy HMF011435 Glass 1000 mL 3 Neck Round Bottom Boiling Flask with 24/40 Center and Side Joints Angled - With 2 necks having the same joints laboy glass flasks are heavy wall designed, made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in chemistry processes like heating and cooling. This multi-neck flask has three standard taper ground joint.

 

Chemglass CG-1508-P-35 Glass 2000mL Heavy Wall Single Neck Round Bottom Flask with 3525 Spherical Socket Joint

Chemglass CG-1508-P-35 Glass 2000mL Heavy Wall Single Neck Round Bottom Flask, with 35/25 Spherical Socket Joint

Chemglass CG-1508-P-35 Glass 2000mL Heavy Wall Single Neck Round Bottom Flask, with 35/25 Spherical Socket Joint - 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, heavy wall single short neck flask for use on rotary evaporators for receiving distillate.

 

Chemglass CG-1508-08 Series CG-1508 Heavy Wall Round Bottom Flask Single Short Neck 3525 Socket Joint 500 mL Capacity

Chemglass CG-1508-08 Series CG-1508 Heavy Wall Round Bottom Flask, Single Short Neck, 35/25 Socket Joint, 500 mL Capacity

Chemglass CG-1508-08 Series CG-1508 Heavy Wall Round Bottom Flask, Single Short Neck, 35/25 Socket Joint, 500 mL Capacity - Flasks having a 35/20 socket joint are used as replacements for the collection flask on rotary evaporators. Round bottom, heavy wall single short neck flask with a spherical socket joint.

 

Chemglass CG-1520-46 Glass 50mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 1420 Standard Taper Outer Joint and 20 Degree Angle

Chemglass CG-1520-46 Glass 50mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 14/20 Standard Taper Outer Joint and 20 Degree Angle

Chemglass CG-1520-46 Glass 50mL Round Heavy Wall 2 Neck Bottom Boiling Flask with 14/20 Standard Taper Outer Joint and 20 Degree Angle - Flasks with 10/30 side neck are for use with cg-3506 thermometers. Flasks with joint sizes other than those listed are available. The 29/26 center neck flasks have a groove tooled just below the grind to aid in clamping of the flask. Round bottom, heavy wall two neck flask with standard taper outer joints on both the center neck and angled side neck.

 

Chemglass CG-1506-27 Glass 3000mL Heavy Wall Single Neck Round Bottom Flask with 2440 Standard Taper Outer Joint

Chemglass CG-1506-27 Glass 3000mL Heavy Wall Single Neck Round Bottom Flask, with 24/40 Standard Taper Outer Joint

Chemglass CG-1506-27 Glass 3000mL Heavy Wall Single Neck Round Bottom Flask, with 24/40 Standard Taper Outer Joint - The 29/26 flasks have a groove tooled just below the grind to aid in clamping of the flask. Flasks with joint sizes other than those listed are available. Round bottom, heavy wall single short neck flask with a standard taper outer joint.

 

Laboy HMF011442 Glass 2000 mL 3 Neck Round Bottom Boiling Flask with 2440 Center and Side Joints Angled

Laboy HMF011442 Glass 2000 mL 3 Neck Round Bottom Boiling Flask with 24/40 Center and Side Joints Angled

Laboy HMF011442 Glass 2000 mL 3 Neck Round Bottom Boiling Flask with 24/40 Center and Side Joints Angled - This multi-neck flask has three standard taper ground joint. With 2 necks having the same joints laboy glass flasks are heavy wall designed, made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in chemistry processes like heating and cooling.

 

Laboy HMF011326 Glass 500 mL 2 Neck Round Bottom Boiling Flask with 2440 Center Joint and 1420 Side Joint Angled

Laboy HMF011326 Glass 500 mL 2 Neck Round Bottom Boiling Flask with 24/40 Center Joint and 14/20 Side Joint Angled

Laboy HMF011326 Glass 500 mL 2 Neck Round Bottom Boiling Flask with 24/40 Center Joint and 14/20 Side Joint Angled - With 2 necks having the same joints laboy glass flasks are heavy wall designed, made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree celsius, can be heated directly in an open flame and can withstand typical laboratory thermal variations in chemistry processes like heating and cooling. This multi-neck flask has two standard taper ground joint on the centre neck and the side angled neck.