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Specifically shaped for uniform heat distribution, the round bottom flasks are used for distillation, chemical reactions, heating liquid sample, and storage demands. Manufactured from resistant glass, the spherical containers will spread encountered stress evenly across surfaces to prevent fracturing. Built with temperature resistance, the glassware is an essential piece in reflux set-ups. Primarily used for chemical and biochemical research, the round bottom flasks have short or long neck options.

Specifically shaped for uniform heat distribution, the round bottom flasks are used for distillation, chemical reactions, heating liquid sample, and storage demands. Manufactured from resistant glass, the spherical containers will spread encountered stress evenly across surfaces to prevent fracturing. Built with temperature resistance, the glassware is an essential piece in reflux set-ups. Primarily used for chemical and biochemical research, the round bottom flasks have short or long neck options.


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Round bottom flask, Round bottom flask with rim, Quartz, Capacity: 500 ml, Height: 150 mm, Ø ext.: 105 mm

Catalog Number: (TSLA75603)
Supplier: TECHNICAL QUARTZ SOLUTIONS
Description: Round bottom flask, Round bottom flask with rim, Quartz, Capacity: 500 ml, Height: 150 mm, Ø ext.: 105 mm
UOM: 1 * 1 items
Product Image-214-0427

Flask, round bottom, Narrow neck, beaded rim, DURAN® Borosilicate glass, Capacity: 12000 ml, Height: 380 mm, Ø ext.: 295 mm, Neck Ø ext.: 65 mm

Catalog Number: (214-0427)
Supplier: DWK Life Sciences
Description: Flask, round bottom, Narrow neck, beaded rim, DURAN® Borosilicate glass, Capacity: 12000 ml, Height: 380 mm, Ø ext.: 295 mm, Neck Ø ext.: 65 mm
UOM: 1 * 1 items
Product Image-LENZ03348449

Flask, round bottom, Standard ground joints, four necks, three angled side necks (15°), DURAN® Borosilicate glass, Capacity: 250 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ø ext.: 85 mm

Catalog Number: (LENZ03348449)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, three angled side necks (15°), DURAN® Borosilicate glass, Capacity: 250 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ø ext.: 85 mm
UOM: 1 * 1 items
Product Image-3001949.

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 250 ml, Socket size: 19/26 NS, Height: 140 ± 6 mm, Ø ext.: 85 mm

Catalog Number: (3001949.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 250 ml, Socket size: 19/26 NS, Height: 140 ± 6 mm, Ø ext.: 85 mm
UOM: 1 * 1 items
Product Image-3211137.

Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 100 ml, Centre neck: 14/23 NS, Side necks: 14/23 NS, Ø ext.: 64 mm

Catalog Number: (3211137.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 100 ml, Centre neck: 14/23 NS, Side necks: 14/23 NS, Ø ext.: 64 mm
UOM: 1 * 1 items
Product Image-3211122.

Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 25 ml, Centre neck: 14/23 NS, Side necks: 14/23 NS, Ø ext.: 41 mm

Catalog Number: (3211122.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 25 ml, Centre neck: 14/23 NS, Side necks: 14/23 NS, Ø ext.: 41 mm
UOM: 1 * 1 items
Product Image-3211128.

Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 50 ml, Centre neck: 14/23 NS, Side necks: 14/23 NS, Ø ext.: 51 mm

Catalog Number: (3211128.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 50 ml, Centre neck: 14/23 NS, Side necks: 14/23 NS, Ø ext.: 51 mm
UOM: 1 * 1 items
Product Image-3001410.

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 5 ml, Socket size: 14/23 NS, Height: 58 ± 3 mm, Ø ext.: 30 mm

Catalog Number: (3001410.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 5 ml, Socket size: 14/23 NS, Height: 58 ± 3 mm, Ø ext.: 30 mm
UOM: 1 * 1 items
Product Image-LENZ03348458

Flask, round bottom, Standard ground joints, four necks, three angled side necks (15°), DURAN® Borosilicate glass, Capacity: 500 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ø ext.: 105 mm

Catalog Number: (LENZ03348458)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, four necks, three angled side necks (15°), DURAN® Borosilicate glass, Capacity: 500 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ø ext.: 105 mm
UOM: 1 * 1 items
Product Image-3001437.

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 100 ml, Socket size: 14/23 NS, Height: 105 ± 6 mm, Ø ext.: 64 mm

Catalog Number: (3001437.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 100 ml, Socket size: 14/23 NS, Height: 105 ± 6 mm, Ø ext.: 64 mm
UOM: 1 * 1 items
Product Image-3002458.

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 500 ml, Socket size: 24/29 NS, Height: 163 ± 6 mm, Ø ext.: 105 mm

Catalog Number: (3002458.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 500 ml, Socket size: 24/29 NS, Height: 163 ± 6 mm, Ø ext.: 105 mm
UOM: 1 * 1 items
Product Image-3002970.

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 1000 ml, Socket size: 29/32 NS, Height: 200 ± 7 mm, Ø ext.: 131 mm

Catalog Number: (3002970.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 1000 ml, Socket size: 29/32 NS, Height: 200 ± 7 mm, Ø ext.: 131 mm
UOM: 1 * 1 items
Product Image-3002982.

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 5000 ml, Socket size: 29/32 NS, Height: 315 ± 7 mm, Ø ext.: 223 mm

Catalog Number: (3002982.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 5000 ml, Socket size: 29/32 NS, Height: 315 ± 7 mm, Ø ext.: 223 mm
UOM: 1 * 1 items
Product Image-3002449.

Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 250 ml, Socket size: 24/29 NS, Height: 140 ± 6 mm, Ø ext.: 85 mm

Catalog Number: (3002449.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joint, single neck, DURAN® Borosilicate glass, Capacity: 250 ml, Socket size: 24/29 NS, Height: 140 ± 6 mm, Ø ext.: 85 mm
UOM: 1 * 1 items
Product Image-3214137.

Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 100 ml, Centre neck: 29/32 NS, Side necks: 14/23 NS, Ø ext.: 64 mm

Catalog Number: (3214137.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 100 ml, Centre neck: 29/32 NS, Side necks: 14/23 NS, Ø ext.: 64 mm
UOM: 1 * 1 items
Product Image-3214458.

Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 500 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ø ext.: 105 mm

Catalog Number: (3214458.)
Supplier: Lenz Laborglas GmbH & CO.KG
Description: Flask, round bottom, Standard ground joints, two necks, angled side neck, DURAN® Borosilicate glass, Capacity: 500 ml, Centre neck: 29/32 NS, Side necks: 29/32 NS, Ø ext.: 105 mm
UOM: 1 * 1 items
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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on +353 1 88 22222.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on +353 1 88 22222.
This product is marked as restricted and can only be purchased by approved Shipping Accounts. If you need further assistance, email VWR Regulatory Department at eurega_services@eu.vwr.com
-Additional Documentation May be needed to purchase this item. A VWR representative will contact you if needed.
This product has been blocked by your organisation. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
This product is no longer available. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service on +353 1 88 22222.
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