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Boiling Flasks

Boiling Flasks

Boiling flasks are used for heating and boiling of liquids. The flasks are designed to have round bodies with long, thin necks to facilitate uniform heat distribution and minimize evaporation. Boiling flasks are typically made of borosilicate glass, which is resistant to thermal shock and chemicals. Some boiling flasks have rounded or conical bottoms and need support to stand upright, while others have flat bottoms and can stand alone.
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1 – 15 of 51 results
1

Lenz Laborglasinstrumente™ Duran™ Medium-neck Round Bottom Flasks

Manufactured from Duran™ glass. Lenz Laborglasinstrumente™ Duran™ Medium-neck Round Bottom Flasks include a conical ground joint.

EDGE
Neck Style Medium
Bottom Shape Round
Material Borosilicate Glass,Duran Glass
Certifications/Compliance DIN EN ISO 4797
2

DWK Life Sciences DURAN™ Round Bottom Flask, with standard ground joint

Round flasks are used for reactions of all kinds, e.g. using heat during distillation or extraction, as receiving flasks, for freezing or in vacuum apparatus.

EDGE
Material Borosilicate Glass (3.3)
Autoclavable Autoclavable
For Use With (Application) Distillation; Extraction; Connection to other glass vessels; Heating; Suitable for heating baths and mantles; Evaporation of liquids; Suitable for mounting on tripods; Drying of materials; Volume sizes 25 mL (NS 19/26), 50 mL (NS 24/29 and NS 29/32), 500 mL (NS 45/40), 1000 mL (NS 45/40) and 2000 mL (NS 45/40) are not accordting to DIN ISO
3

Lenz Laborglasinstrumente™ DURAN™ Borosilicate Glass Round Bottom Flasks with Conical Ground Joint

EDGE
Bottom Shape Round
Material Borosilicate Glass,Duran Glass
4

DWK Life Sciences DURAN™ Round Bottom Flask, narrow neck, with beaded rim

Due to their spherical shape, round bottom flasks are used for heating liquids, among other things.

Material Borosilicate Glass (3.3)
Autoclavable Autoclavable
For Use With (Application) Suitable for heating mantles; Heating; Mixing several components; Sizes 2000, 3000, 5000, 6000, 12000 and 20000 mL non-DIN ISO size, size 12000 mL non-DIN ISO size, conforms ASTM E 1403 and Size 20000 mL conforms ASTM E 1403
5

DWK Life Sciences DURAN™ Flat Bottom Flask, with standard ground joint

Flat bottom flasks are suitable for pressureless work. Due to the standard ground joint, plungers can be connected to other ground joint components or closed with ground joint plugs.

Material Borosilicate Glass (3.3)
No. per Pack 10/Pk.
Autoclavable Autoclavable
For Use With (Application) Diluting solutions; Heating; Volume sizes 250 mL (NS 24/29), 500 mL (NS 24/29), 1000 mL (NS 24/29) and 2000 mL (NS 29/32) are not according to DIN ISO
6

Lenz Laborglasinstrumente™ DURAN™ Glass Round Bottom Flasks

Can be used to make solutions or hold, contain, collect and measure chemicals. Lenz Laborglasinstrumente™ DURAN™ Glass Round Bottom Flasks are manufactured from durable borosilicate glass.

7

DWK Life Sciences DURAN™ Pear Shape Flask, with standard ground joint

Pear shape flasks are used for processing small quantities of substances.

Material Borosilicate Glass (3.3)
No. per Pack 10/Pk.
Autoclavable Autoclavable
For Use With (Application) Small-scale reactions; Distillation; Extraction; Connection to other glass vessels; Heating of small amounts; Suitable for heating baths and mantles; Evaporation of liquids; Suitable for mounting on tripods
9

Lenz Laborglasinstrumente™ DURAN™ Four-neck Round Bottom Flasks with Parallel Side Necks

Especially made for reactions with necks for easy addition of measurement tools. Lenz Laborglasinstrumente™ DURAN™ Four-Neck Round Bottom Flasks with Parallel Side Necks are manufactured from durable DURAN glass.

Bottom Shape Round
Material Borosilicate Glass,Duran Glass
10

DWK Life Sciences DURAN™ Flat Bottom Flask, wide neck, with beaded rim

Flat base means flasks can be set down without a supporting ring.

Material Borosilicate Glass (3.3)
No. per Pack 10/Pk.
Autoclavable Autoclavable
For Use With (Application) Heating; Size 2000 mL non-DIN EN ISO size
11

DWK Life Sciences DURAN™ Flat Bottom Flask, narrow neck, with beaded rim

Flat base means flasks can be set down without a supporting ring.

Material Borosilicate Glass (3.3)
Autoclavable Autoclavable
For Use With (Application) Heating; Sizes 20000, 3000 and 5000 mL non-DIN ISO size
12

DWK Life Sciences DURAN™ Round Bottom Flask, wide neck, with beaded rim

Due to their spherical shape, round bottom flasks are used for heating liquids, among other things.

Material Borosilicate Glass (3.3)
Autoclavable Autoclavable
For Use With (Application) Suitable for heating mantles; Heating; Mixing several components; Sizes 50, 1000, 2000, 3000, 5000, 6000, 10000, 12000 and 20000 mL non-DIN ISO size
13

Lenz Laborglasinstrumente™ Duran™ Pear-shaped Flask with Conical Ground Joint

Manufactured from Duran™ glass. Lenz Laborglasinstrumente™ Duran™ Pear-shaped Flask with Conical Ground Joint complies with DIN 12383 standards.

15

DWK Life Sciences DURAN™ Twin-Neck Round Bottom Flask, with standard ground joint, angled side neck

Multi-neck pellets are used for distillation, fraction and reactions of all kinds.

Material Borosilicate Glass (3.3)
No. per Pack 1/Pk.
Autoclavable Autoclavable
For Use With (Application) Distillation; Extraction; Connection to other glass vessels; Heating; Suitable for heating baths and mantles; Volumen sizes 100 mL (NS 24/29 and NS 29/32), 250 mL (NS 24/29), 500 mL (NS 24/29) and 1000 mL (NS 24/29) are not according to DIN ISO